Latest online resources for UI for ASP.NET AJAX

[Telerik Admin]

Hi everyone,

Below you can find the list of latest resource for Telerik UI for ASP.NET AJAX suite. Resources are posted by chronological order.

To navigate to the latest one you can use the link below:

Link to Latest Online Resources (3 December 2019)





Online Resources from 23.11.2012:

New Articles

RadEditor: Inner toolbars are displayed in multiple lines
When there are CSS styles applied through global selectors (tag names) the elements in the RadEditor may not have the expected rendering.

RadMenu: Creating Context Menu at Runtime
Help article that describes how to create RadContextMenu at runtime.

Update Articles

RadInput: Understanding the Single Rendering HTML Output and CSS Styling
Updated almost the whole content.

RadPivotGrid: Range Grouping in RadPivotGrid
Added ShowGroupsWhenNoData property.

RadListBox
Added code examples in the following articles:

• http://www.telerik.com/help/aspnet-ajax/listbox-reordering-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-reordered-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-updating-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-updated-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-selectedindexchanged-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-textchanged-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-itemcheck-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-transferring-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-transferred-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-deleting-event.html
• http://www.telerik.com/help/aspnet-ajax/listbox-deleted-event.html
  

RadAsyncUpload
Added code examples in the following articles:

• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientadded.html
• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientselected.html
• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientfilesselected.html
• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientfileuploading.html
• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientfileuploaded.html

[Kate]

Posted below you can find a list of the latest resources uploaded for the last week:

New articles

RadEditor: Broken File Browser dialogs

A Troubleshooting article which gives a workaround for the broken File Browser dialogs, caused by an unregistered handler for RadAsyncUpload.

RadEditor: Appearance and Undesired White Space in IE9

A Troubleshooting article which gives a workaround for the undesired white spaces added when the content is pasted/deleted into table cells.

RadTreeView: Directory and file search using loading all RadTreeView nodes on Page Load event
A Code Library demonstrating how to load all RadTreeView nodes on Page Load event recursively.

Updated articles:

RadAsyncUpload:
Added code examples in the following articles:

• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientfilesuploaded.html
• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientfileuploadfailed.html
• http://www.telerik.com/help/aspnet-ajax/asyncupload-onclientvalidationfailed.html

RadCalendar: RadDatePicker, RadTimePicker, and RadDateTimePicker Structure
Added section which demonstrates how RadDatePicker can close all of the currently open Time Popups on the page.

RadGrid: Client/server grid performance optimizations
In the article is added additional information on how to optimize the grid client and server performance

[Rumen]

Hi all,

You can find listed below the latest RadControls for ASP.NET AJAX resources:

RadGrid (two demos and one code library)

• Overview demo – new resource added
• Editing XML Using XmlDataSource – whole redesign of the application. More information is available in the description of the demo application.
• Customize RadGrid PopUp edit form position with an extender – new WebApplication project added. The functionality remains the same but for convenience new project type is added.

RadEditor (new KB article)

• Enabling Image Alignment via JustifyLeft and JustifyRight commands - How-To knowledge base article

RadAsyncUpload (new article)

• OnClientFileDropped – Client-side event that is executed when a file is dropped on some of the drop zones of RadAsyncUpload.

RadAutoCompleteBox (updated demo)

• Overview – Single and Multiple selection functionality added to the demo.

RadComboBox (new article and demo)

• DropDown Auto Width -  Functionality that provides the ability to achieve a dynamic repaint of the DropDown width related to the largest width of the RadComboBoxItem
• DropDown Auto Width – Demo

RadOrgChart (new demo)

• Structure Zooming – A demo that enables end users to observe the tree structure of a RadOrgChart without the need of scrolling.

All the best,
Rumen
the Telerik team

[Pavlina]

Hi all,

Posted below you can find a list of the latest RadControls for ASP.NET AJAX resources uploaded for the last week:

RadDock (new article)

• Placing a RadDock in an UpdatePanel - The article demonstrates how to prevent UpdatePanel to add a new RadDock control with the same ID on the page, when you move the RadDock and then initiate AJAX request

IE 10 (new sticky thread)

•   JavaScript errors in IE10 and the site is working fine in the rest browsers - Covers the reported issues with RadControls in IE 10 only.

RadScriptManager (updated article)

•   CDN Overview - Scenarios when CDN can and cannot be used.

[Kate]

RadHtmlChart  (updated articles)

• OnClientSeriesHovered - Added information about the available arguments methods.
• OnClientSeriesClicked - Added information about the available arguments methods.

RadToolTip (new KB article)

• Using RadGrid Hierarchy with RadToolTipManager that is bound to records in another grid - How-To knowledge base article

RadToolBar (new article)

• Using Sprite Images in RadToolBarSplitButton - In the article is explained how to use sprite images with the RadToolBarSplit button using some javascript code and css styles. 

RadTreeView (new CodeLibrary)

• Creating Different Templates Depending on the node level - The CL exemplifies how to apply different templates depending on the node level.

[Rumen]

Common

• Demystifying unexpected redirects to login page in ASP.NET (new blog post) - Have you ever run into the strange behavior of a login page life cycle being executed multiple times when the access to all pages is denied for anonymous users? Read on to see why this happens and how you can avoid it with only a few changes in the web.config file of your website.
• Any of the predefined Telerik Skins cannot be applied after upgrade (useful forum thread) - After upgrading to a specific version of the Telerik controls I get the following error "Telerik.Web.UI.RadComboBox with ID='RadComboBox1' was unable to find an embedded skin with the name 'Metro' and the only skin that can be used is the Default one.

RadCalendar (updated KB article)

• Changing the Tab order in RadDatePicker - How-to KB article

RadGrid (2 updated KB articles)

• Pass data to parent page from RadGrid displayed in RadWindow - How-to KB article
• Placing RadTreeView in GridTemplateColumn of RadGrid - How-to KB article

RadEditor (new KB article)

• How to notify the user that an image with invalid file name is being uploaded - How-to KB article

[Kate]

RadFormDecorator (new KB article)

• Styling Scrollbars - How to apply custom styling for scrollbars

RadGrid

• Get selected items through all pages (new code library)
• HTML-Based Export (updated articles)
• Excel Format(HTML-Based) (updated articles)                     
• Word Format(HTML-Based) (updated articles)

RadMenu (new blog post)

• How to Build Telerik.com-like Navigation with Telerik’s ASP.NET Menu Control - This blog post describes how to create a Telerik.com-like navigation using the RadMenu control.

RadPivotGrid (new help article)

• RadPivotGrid Aggregates Position - The article describes the options for setting RadPivotGrid’s aggregate position depending on its row table layout.

RadSlider (new help article)

• Broken skin when loading the RadSlider via AJAX - Troubleshooting article for fixing a problem with broken links

RadWindow (new KB article)

• Opening a modal RadWindow on page load inside RadWindow under IE9 and IE10 - Open a modal RadWindow inside another RadWindow in IE9 and IE10 and avoid the JavaScript error this can cause because of a browser bug. This also applies to the server RadAlert(), RadConfirm() and RadPrompt() methods. 

[Pavlina]

RadEditor (KB article)

• Hiding the text of the Design, HTML and Preview buttons - How to KB article

RadFormDecorator(new help articles)

• Integration with RadControls - The efect of RadFormDecorator on RadControls
• Integration with Standard Controls - The effect of RadFormDecorator on HTML elements and ASP Standard, Login and Data ToolBox Controls
• Sever-side API - Server-side API of RadFormDecorator                     
• Client-side API - Client-side API of RadFormDecorator    
• What is Zone - Description of Zone 
• Decorating RadWindow When DecorationZoneID Is Set – How to decorate the content of RadWindow when DecorationZoneID property is set.

RadGrid (updated CL)

• Automatic operations with ObjectDataSource control - This code library represents how to perform automatic operations (update/insert/delete) with ObjectDataSource control (part of ASP.NET 3.5.).

 

[Kate]

Highlights

RadDropDownTree (NEW Control)

Templates Overview
DataBinding Overview
Client-Side Events
Server-Side Events 

RadSearchBox (NEW Control)

Overview
Keyboard Support
Differences between RadSearchBox and RadAutoComplete
Client-Side events
Server-Side events
Header and Footer Templates

RadDropDownList (NEW Control)

Overview
Difference between RadDropDownList and RadComboBox
Functionality Default Message
DataBinding Binding to ASP DataSource components
DataBinding Overview
Keyboard Support
Templates Overview
Client-Side Basics
Client-Side Events
Server-Side Events

RadZipLibrary (NEW control)

Overview - The new Zip Library control allows you to compress data like images, docx or pdf files and send them over the wire. Thus, you will achieve fast and secure transactions.

Other New Resources

RadImageEditor
ImageEditor - Drawing - A new demo showing the drawing functionality in the ImageEditor
ImageEditor - Filters - A new demo showing the canvas supported filters in the ImageEditor
 
RadDock
Built-in Dock State Persistence - Added article on built-in state persistence
Build-In State Persistance  -  Added demo on built-in state persistence

RadButton
RadButton server-side methods  - Added article on new server-side methods for custom toggle button

RadHtmlChart
Donut Chart  - Added demo on Donut chart type
Bubble Chart - Added demo on Bubble chart type
Bubble Chart - Added article on the Bubble chart type
Donut Chart  - Added article on Donut chart type
Condiotional Item Colorization - Added article on using custom colors for series items through the datasource
Label Titles Font Settings - Added article on new appearance settings for the label

RadGauge
LinearGauge Pointer and Range Size  – How to configure the size of the Range and the Pointer in RadLinearGauge
Set Font of the Scale Labels  -  Description and settings of the Scale Labels’ Font property
Programmatic Creation  – How to create RadGauge programmatically

RadAjax
WAI-ARIA Support  -  The RadAjax control offers WAI-ARIA support.
Controlling Appearance - BackgroundTransparency property for RadAjaxLoadingPanel and UpdatePanelCssClass property for RadAjaxManager are added

RadBarcode
WAI-ARIA Support
Barcode OutputType - OutputType specifies the output type of the RadBarcode

RadBinaryImage
RadBinaryImage  - Added Design time and Wai-Aria support sections

RadCalendar
WAI-ARIA Support

RadFilter
WAI-ARIA Support 

RadGrid
WAI-ARIA Support
Model Binding and Strongly Typed Data Controls Support

RadInput
WAI-ARIA Support 

RadDataPager
WAI-ARIA Support

RadPivotGrid
WAI-ARIA Support
WCAG 2.0 and Section 508 Accessibility Complience - RadPivotGrid for ASP.NET AJAX satisfies the requirements of "Section 508" for software accessibility, as well as those for level AA (in compliance with the W3C Web Accessibility Guidelines 2.0).
Getting Familiar with RadPivotGrid Server-Side API - RadPivotGrid Class Members are added
Fields Popup – new Fields Popup functionality for RadPivotGrid is available
Summarize by Settings Dialogue - Changing the aggregate operator for a field in RadPivotGrid is done through the Summarize By Settings dialogue.

RadTreeList
WAI-ARIA Support
Model Binding and Strongly Typed Data Controls Support
TreeListButtonColumn Confirm Dialog - The native button column of RadTreeList allows for the display of a confirmation dialog before the column command is fired.  

RadListView
Model Binding and Strongly Typed Data Controls Support 

 

If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.

[Pavlina]

Hello,

Common
Different ways to make a request to the server in ASP.NET
How to integrate RadControls for ASP.NET AJAX in a WebFarm or WebGarden scenario – How-To Blog post
How to Leverage the .NET 4.5 Model Binding and Strongly Typed Data Controls with Telerik’s ASP.NET AJAX Controls – Part 1 -  .NET 4.5 model binding support into our data bound controls is integrated.
How to Leverage the .NET 4.5 Model Binding and Strongly Typed Data Controls with Telerik’s ASP.NET AJAX Controls – Part 2

Persistence Framework(new)
Persistence Framework - Persistence Framework can save the UI-configurable settings of the controls from the RadControls suite. Custom settings can also be persisted via the server-side API of the RadPersistenceManager control.  

RadPivotGrid
OLAP support in RadPivotGrid for ASP.NET AJAX - RadPivotGrid supports a couple of data providers: Adomd and Xmla.

RadSearchBox (new control)
Need to search in large datasets? Don’t worry, Telerik’s ASP.NET SearchBox control has got you covered. – A blog post describing the new RadSearchBox control

RadDropDownList (new control)
Meet the Better-performing and More Lightweight DropDownList for ASP.NET AJAX -  A blog post introducing our new RadDropDownList control

RadDropDownTree (new control)
Select from Drop-Down with Hierarchical Data via Telerik’s RadDropDownTree for ASP.NET AJAX - A blog post introducing our new RadDropDownList control

[Kate]

Drawing and Image Filters in Telerik’s Image Editor for ASP.NET AJAX
Blog post describing the new features in RadImageEditor

Different ways to make a request to the server in ASP.NET -
New blog post describing the different ways to make a request to the server. In this post you can also find some benefits and peculiarities they have. 

Known Issues, Tips and Tricks
New help article providing tips and tricks as well as any known issues related to the Visual StyleBuilder. 

Modal Popup
New demo demonstrating the Modal feature of RadWindow

Client-side Binding
New demo about the client-side databinding feature of the RadHtmlChart control

Standard third party buttons
Updated demo of the RadSocial Share control with Pinterest buttons

Broken skin when loading the RadRating via AJAX
New help article about loading the skin of a RadRating when the control is added on the page through AJAX

Custom Storage Provider
New demo that demonstrates the functionality that our PersistenceFramework - how to preserve the state of RadGrid using a custom storage provider.

Known Limitations
New help article which includes the known limitations of RadGrid control.

NodeDataBound
New help article that provides an example of how to set a node from the tree in the dropdown as selected by using the CreateEntry() property

Expand Node On Single Click
New help article that describes the new functionality of the RadDropDownTree

Delimiters
New help article that describes the new functionality of the RadDropDownTree

AppointmentUpdate
Updated article related to the server side AppointmentUpdate of the RadScheduler

[Kate]

Common
How-to Create a Custom Skin with Our Improved Styling Tool for ASP.NET AJAX
This blog post describes the improvements in the Visual Style Builder tool.

Learn How Telerik’s 3 New ASP.NET AJAX Skins Differ from All We’ve Released in the Past
This blog post introduces the new built-in skins of the RadControls for ASP.NET AJAX.

6 Telerik ASP.NET AJAX Skins Going Obsolete
This blog post contains information about the built-in skins that are going obsolete.

Telerik RadControls for ASP.NET are getting a bit Sassy
This blog post describes the integration of Sass in the RadControls for ASP.NET AJAX.

Google Chrome 26 performance issue
This sticky thread elaborates on the cause the sites to work slower in Google Chrome since they have updated to version 26.

Persistence Framework
Manage your app’s settings with Telerik’s ASP.NET Persistence Framework
This blog post introduces the Persistence Framework.

RadWindow
Distorted Appearance
This help article describes how to fix the appearance of a RadWindow popup that seems distorted.

RadListBox
Transfer RadListBoxItems with ItemTemplates
This KB provides an example how to transfer items with templates between two RadListBox controls that are bound to datasource.

RadGrid
Grid - MS Excel/MS Word/CSV
Updated demo in which UseItemStyles property is added. This property gives you the ability to apply the item styles to the exported file.

RadCalendar
RadDatePicker - selecting a day is getting the previous day
The thread provides an explanation for the selection issue with RadDatePicker when the users are located on DST zones.

Calendar - Styles
Updated demo which demonstrates how hover style can be applied when mouse over selected element in RadCalendar.

[Kate]

Common
Automated Testing for Dynamic ASP.NET Web Applications Made Easy with Telerik Test Studio
New blog post about testing web applications using Test Studio.

RadProgressArea
Overview
Describes the basic functionality of the RadProgressArea.
 
RadAsyncUpload
Drag and Drop
Describes the drag and drop functionality of the RadAsyncUpload

Getting Started
This help article provides the basic steps that you need to take to get started using the RadAsyncUpload control.

RadDropDownTree
How to Create An Entry or Select a Node
This help article describes how to check nodes on page load which at the same time create entry that is placed in the entry area.

RadEditor
See How Seamless Paste from Word Can Be with the Improved Telerik’s ASP.NET Editor
This blog post describes the improvements in the paste from MS Word functionality.

Insert Select Element
This help article describes the Insert Select dialog of RadEditor.

Insert Light-Weight Dialogs
Updated help article about the light version of the RadEditor dialogs.

RadSpell
Improper Spelling Suggestions
Updated help article about improper spelling suggestions.

RadGrid
Multi-level selection in hierarchical grid
Multi-level selection in hierarchical grid VB.NET
Updated the sample which demonstrates checkbox mode selection for multiple items through the inner levels of a hierarchy.

[Kate]

Common
Avoid Failing Tests When Automating Dynamic Ajax Requests
New blog post about avoiding failing tests when automating dynamic Ajax requests.

RadAsyncUpload
Security
This help article describes how to encrypt the configuration of RadAsyncUpload (e.g. Target Folder, AllowedFileExtensions ) in a secure way in the web.config file.

RadPivotGrid
Localization
New help article which demonstrates localization of RadPivotGrid through global resources.

[Eyup]

Common
Testing with Test Studio Overview
Test Studio Translators for Telerik RadControls for ASP.NET AJAX
New help topics about building tests for RadControls using the Test Studio’s plugin for Visual Studio

Incorporating RadControls for ASP.NET Ajax in SharePoint 2013 WebSites
New help article about incorporating RadControls for ASP.NET Ajax in SharePoint 2013.

RadGrid
Excel-like RadGrid
This sample project demonstrates Excel spreadsheet look and feel for RadGrid.

Export grouped data in Biff format
This example demonstrates the ability to export grouped data when Biff export format is used.

Chart (HTML5)
Candlestick Chart
New demo about Candlestick Chart.

Date Axis
New demo about Date Format Strings support for the Axis Labels, Series Labels and Series ToolTips of the chart.

RadDock
Render Modes
New help article about the render modes of RadDock.

FormDecorator
Telerik's ASP.NET FormDecorator
Updated with configurator for the render modes of RadFormDecorator.

Render Modes
New help article about the render modes of RadFormDecorator.

RadImageEditor
Image Upload
This example demonstrates how to upload an image for editing in the ImageEditor.

Save Image to a Custom Location
This example demonstrates how to cancel the default Saving functionality of the ImageEditor and to save the edited image to a custom location.

RadTileList
Telerik's ASP.NET TileList
Examples that demonstrate the new RadTileList control.

RadTileList Overview
Documentation of the new RadTileList control.

RadToolTip
Telerik's ASP.NET ToolTip
Updated with configurator for the render modes of RadToolTip.

RadDropDownTree
Button Settings
New article describing how to add the different buttons that can be used with the RadDropDownTree

DropDown Settings
New article describing the different settings that can be used with the dropdown of the RadDropDownTree control 

Filtering 
New article describing how to use the filtering functionality of the RadDropDownTree control

RadRibbonBar 
RibbonBar Gallery 
New help article describing the newly added item to the RadRibbonBar control 

RadTabstrip 
Overview Demo               
Demonstrating how to integrate nested RadTabStrip, Vertical alignment and the usage of an Image in the RadTab.

Data Source Controls      
Demonstrating how to bind the RadTabStrip to various types of data sources, including declarative datasources.

Custom Attributes
Demonstrates how to use the Attributes collection to expand the information stored with the tabs.

RadAsyncUpload 
Multiple File Selection
This article describes how multiple file selection article works.

Uploading Large Files
This article describes  how large files are uploaded in RadAsyncUpload in different upload modules.

SearchBox
SearchContext overview
This article explains basically how SearchContext works.

SearchContext  DataBinding overview
This article explains basically how SearchContext databinding can be  implemented.

If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.

[Slav]

Chart (HTML5)
Configuring Series Items
Updated help article, contains information about breaking change in the chart.

RadDock
Telerik's ASP.NET Dock
Updated with configurator for the render modes of RadDock.

RadGrid
Batch Editing (NEW Feature)
Enables inline client-side editing and performing multiple changes before the user decides to either apply the changes or cancel them.

Expand All for Hierarchy and Grouping (NEW Feature)
Demonstrates the capability to expand/collapse all detail items/group headers upon a single button click which is rendered in the hierarchy/group expand column headers.

RadFilter
Field Editors
Working with Items and Expressions
Improved functionality and enhanced customization.

SearchBox
Client Side binding
This article provides an example how SearchContext can be bound with Web Service and OData DataSource.

Server Side binding
This article provides an example how SearchContext can be bound server side.

RadRibbonBar
Meet the New ApplicationMenu and RibbonBarGallery of the Telerik’s RibbonBar for ASP.NET AJAX
This blog post describes the new additions to the RadRibbonbar control - their appearance, applications and usage.

[Eyup]

RadPivotGrid
Totals Calculations (NEW Feature)
RadPivotGrid can now apply specific calculations on your data.

RadGrid
Conditional HierarchyLoadMode (NEW Feature)
This new mode is mix of server and client load - when an item is expanded for the first time, a postback is initiated to get the required child items but next time the same item will be expanded on the client without additional postbacks.

Export multiple grids to Excel
Demonstrates how to export multiple RadGrids in different Excel spreadsheets.

RadRibbonBar
RibbonBarGalleryItem
Help article describing the properties that can be used with the RadRibbonBarGalleryItem

RadDropDownTree
Localization
Help article describing how the RadDropDownTree control can be localized.

RadHtmlChart
Introducing the SeriesItems Collection in RadHtmlChart for ASP.NET AJAX
Blog post that introduces the new SeriesItems collection of RadHtmlChart.

Regards,
Eyup
Telerik

[Slav]

Common
The Attack of the Light-Rendered or how Lightweight beats Heavyweight with CSS3 and HTML5
Blog post about the new Lightweight Rendering mode.

RadHtmlChart
Candlestick Chart
Help article about the new Candlestick series type of RadHtmlChart.

Date Axis
Help article about support for DateTime objects when the RadHtmlChart is databound.

Setting Explicit Items
Updated help article about setting explicit items.

Configuring Axes
Updated help article about configuring axes.

RadTileList
Client-side Events Overview
New help article about Client-side events of RadTileList.

TileList object
New help article about the client-side TileList object.

TileList object
New help article about the server-side TileList object.

Animations
New demo about the animation that shows the PeekTemplate.

RadDropDownTree
How RadDropDownTree for ASP.NET AJAX Became More Useful and Fully Replaced the TreeView in ComboBox Integration
Blog post describing the use of the RadDropdownTree and the cases when it is more appropriate to use the control instead of the TreeView in a ComboBox

RadTabStrip
Overview
Overview demo of the RadTabStrip control describing the base functionality of the control

Server Templates
This example demonstrates how to use the server templates of RadTabStrip, in order to customize each tab.

RadOrgChart
RadOrgChart Client API
New help article describing the client-side API of the RadOrgChart control

[Eyup]

RadMenu
Replacing the Default SharePoint Navigation Menu with Telerik’s ASP.NET AJAX Menu
A blog post describing how the default SharePoint Navigation Menu can be replaced with the Telerik's  RadMenu.

RadDropDownTree
Keyboard Support
New help article describing how to use the RadDropDownTree control with the keyboard

How to Pre-Select a Node Based on Text or Value
A help article describing how to pre-select a node from the dropdown in the RadDropDownTree

RadPivotGrid
Export to Excel (NEW Feature)
RadPivotGrid now supports export to Excel.

RadCalendar
Lightweight Render Mode
The new Lightweight rendering mode, as its name implies, yields completely different markup making maximum use of CSS 3 and semantic HTML.

RadTextBox
Input Resizing
Improved resizing functionality of RadTextBox.

RadMaskedTextBox
LongRangeMaskPart
New mask element for the mask string.

RadInput
Validation
This article explains how to use validators with RadInput.

[Slav]

RadEditor
Making a Better Editor Experience: Pasting Images into Chrome
Blog post about improvements in posting images in RadEditor.

Toolbar Modes
Updated article about the Toolbar Modes of RadEditor.

RadPivotGrid
OLAP filtering
RadPivotGrid now provides filtering when bound to OLAP data source.

Templates
Updated demo demonstrating the template capabilities of RadPivotGrid.

RadPersistenceFramework
Custom Serializer Provider
This new example demonstrates persisting RadPivotGrid settings using a Custom Serializer Provider.

RadTreeList
Load on Demand
RadTreeList now supports server methods for expand state toggle with enabled load on demand.

RadGrid
Grouping Client-Side API
This new example demonstrates enhanced client-side grouping functionality of RadGrid.

Export to PDF
Exporting to PDF can now be further customized by removing grid headers/footers and borders.

Export to Excel
A new Print element was added to allow printed output modification.

RadAutoCompleteBox
Setting the Position of the Dropdown
A new help article describing how to set the position of the DropDown in the RadAutocompleteBox

[Kate]

Common
Sales Dashboard
Updated integration example.

RadTabStrip
Overview
Updated help article about the most used features of the RadTabStrip control.

[Kate]

Common
Disabling embedded resources
Updated article describing how to disable embedded scripts/skins in RadControls.

RadScriptManager
Custom CDN provider
Updated article describing how to use custom CDN provider.

RadTileList
Programmatic Creation
New article describing how to create a RadTileList programmatically.

[Kate]

RadAutoCompleteBox
Telerik RadAutoCompleteBox with Custom Search Highlighting using Web API
New code library describing how to create a custom search by using Web API with the

RadAsyncUpload
Methods and Properties
Updated help article containing detailed information on the properties and methods

Easy Ways to Upload and Validate Large Files in ASP.NET
New blog post describing how to upload large files by using different approaches

RadDropDownTree
Accessing the Embedded Tree in the DropDown
A new help article describing how to get access to the embedded tree of the RadAutoCompleteBox control

RadCaptcha
Caching Provider
New help article about creating a custom caching provider for storing the captcha code.

RadEditor
How to Enhance the RTF Export of RadEditor for ASP.NET AJAX
New blog post describing how to improve the editor’s RTF support.

RadGrid
Different Data Sources
This example illustrates binding RadGrid or any other databound control to different type of data sources.

Group Selection
This example demonstrates how to select/deselect items in a particular group with the use of checkboxes in the group headers.

[Eyup]

RadGrid
Quick Search
This example demonstrates instant filtering the items collection when RadGrid contains only one single page.

[Slav]

RadHtmlChart
RadHtmlChart vs. RadChart, round 2. Which one is right for me?
Blog post that contains an updated comparison between RadHtmlChart and RadChart.

[Kate]

RadScheduler
Exchange Provider
The Exchange provider is distributed as web site project in our RadScheduler SDK

[Kate]

RadAsyncUpload
Uploading Large Files
This article describes how to upload files with a combined size larger than 2GB.

[Slav]

Common
Create an AJAX-enabled SharePoint WebPart that uses RadControls
This article describes how to create a SharePoint 2013 WebPart that uses RadControls for ASP.NET AJAX.

RadDropDpwnTree
OnClientClearButtonClicked
New help article describing the client side event that fires when the Clear button is being clicked

OnClientClearButtonClicking
New help article describing the client side event that fires when the Clear button has being clicked

[Slav]

Common
Deploying RadControls for ASP.NET AJAX
This article describes the steps for deploying the RadControls for ASP.NET AJAX on a SharePoint Server 2013.

[Kate]

RadAsynUpload
Progress Monitoring
This article describes two distinct ways of progress monitoring

RadSpell
Invoke Separate Spell Check for each Textbox and Submit the Form on Success
This Knowledge Base article describes how to initiate a spell check for each textbox on a page and submit the form if the check passes.

[Kate]

RadAsyncUpload
Overview
Updated article describing the main functionalities and features of the RadAsyncUpload control.

RadAsyncUpload vs RadUpload
Updated article desribing the main differences between the RadAsyncUpload and the Radupload control.

RadSplitter
OnClientResizing

RadGrid
Cancel item drag-n-drop
This example demonstrates how to cancel item dragging upon pressing the ESC key.

[Slav]

Common
Working with Assemblies in the GAC
Blog post about the basics for working with assemblies in the GAC.

RadAutoCompleteBox
Difference between RadAutoCompleteBox and RadComboBox
Help article describing the the difference between RadComboBox and RadAutoCompleteBox.

[Kate]

Highlights

RadCloudUpload (NEW Control)
Overview
Help article describing the main functionality of the RadCloudUpload control

RadMediaPlayer (NEW Control)
First Look
The default demo of the new media player control demonstrating video, audio and YouTube streaming.

RadLightBox (NEW Control)
First Look
Telerik's new lightweight control providing you with an easy way to display images and template content.

Other New Resources

RadMenu
Render Modes
In the help article we introduce a Lightweight rendering mode of the RadMenu control.

Toggle Handle
A help article describing the Toggle Handle that we added as a new functionality to the RadMenu control.

RadScheduler
Agenda View
A help article that describes the new view that we introduce for the RadScheduler control.

RadTileList
Databinding Basics
Help article that describes how the RadTileList can be databound.

LiveTile Overview
Help article that introduces the RadLiveTile control.

Client-side API overview
A series of help articles about the client-side API of the RadTileList control.

RadEditor
Content area custom stylization
Help article that describes how the appearance of RadEditor’s content can be customized.

RadGrid
Virtualization
The new virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience.

CheckList Filtering
RadGrid now provides in-built multiple-value filtering functionality.

RadInput
RadInputManager DatePickerSetting
Transform any regular textbox into a convenient date picker.

RadListView
DataGrouping
RadListView now enables you to group the data source of the control according to one or more specified data fields.

[Kate]

RadScheduler
RadScheduler filtered by RadFilter
This new KB illustrates how to filter RadScheduler using RadFilter control.

RadListView
DataGrouping article
New topic about the DataGrouping feature for the RadListView control.

RadMediaPlayer
Overview topic
General information about the control.

Client-Side Basics
Short list demonstrating the main client-side methods and properties of the player.

RadLightBox
Overview topic
General information about the control.

Getting Started
A quick guide for using the light box.

Client-Side API
Short list demonstrating the main client-side methods and properties of the light box.

Server-Side API
Short list demonstrating the main server-side classes of the light box.

[Kate]

RadScheduler
Overview
Updated article describing all of the different views that can be set to the RadScheduler control

Day View
Updated article describing the Day View that can be set to the RadScheduler control

Week View
Updated article describing the Week View that can be set to the RadScheduler control

Month View
Updated article describing the Month View that can be set to the RadScheduler control

TimeLine View
Updated article describing the TimeLine View that can be set to the RadScheduler control

Multi-Day View
Updated article describing the Multi-Day View that can be set to the RadScheduler control

RadGrid
Virtualization article
New topic about the Virtualization feature of the RadGrid control.

[Hristo Valyavicharski]

Highlights

RadCloudUpload
Overview Demo
File Upload to Azure Blog Storage Demo
File Upload to Amazon S3 Demo
File Upload to Telerik Everlive Demo

RadMenu
Lightweight Render Mode Demo
New demo showing the Lightweight Rendering functionality

Lightweight Render Mode
Updated help article describing the lightweight render functionality

RadScheduler
Agenda View Demo
Added new demo showing how Agenda View works

Agenda View
New help article describing how the Agenda View functionality works

RadMediaPlayer
Video Gallery
Integration sample to demonstrate how the media player can be used inside a container control.

RadLightBox
Databinding
This example demonstrates how to bind RadLightBox to a datasource control.

Templates
You can embed any content inside a RadLightBox template.

[Hristo Valyavicharski]

Common
Render Modes
A new article about the different rendering modes of RadControls.

RadCloudUpload
Troubleshooting
Updated help article describing how to resolve the most common failures during configuration and file uploading.

Configuring multiple containers for one Cloud Storage Provider
Added new help article describing how to configure RadCloudUpload to upload files in multiple containers for the same cloud storage provider.

RadGrid
Batch Editing
Updated topic about the recently introduced feature of RadGrid.

Batch Events
The first topic from a collection of articles demonstrating the client-side event handlers provided for batch editing.

[Kate]

RadCloudUpload
“Cloudy with a chance of file uploads”
Blog post explaining how to successfully upload files to Azure, Amazon S3 and Telerik Everlive in ASP.NET AJAX

RadScheduler
RadScheduler Web Api Binding
This Code Library demonstrates the RadScheduler's new functionality that allows users to bound it to HTTP service using ASP.NET Web API.

RadComboBox
Attach the dropdown to the input element while scrolling within a scrollable container.
Code Library, which shows to resolve the common issue, where the drop down remains opened and detached from the combo's input element.

[Hristo Valyavicharski]

RadScheduler
RadScheduler WebAPI Binding
This is a new SDK, which demonstrates how to bind RadScheduler to HTTP services.

[Hristo Valyavicharski]

RadComboBox
CheckAllCheck
Help article about the Server-side OnCheckAllCheck event.

OnClientCheckAllChecking
Help article about the Client-side OnClientCheckAllChecking event.

OnClientCheckAllChecked
Help article about the Client-side OnClientCheckAllChecked event.

RadScheduler
RadScheduler with external RadCalendar
This KB shows how to use RadScheduler with a small total height, when the  inbuilt RadCalendar is cut off the bottom border of RadScheduler.

How to create WCF data service from existing data base model or custom class
KB which demonstrates how to create WCF service to expose an existing data base data or custom class data.

RadHtmlChart
Sparkline Chart
Demo that illustrates the configuration of Sparkline charts.

Stacked Series
Demo that illustrates how to cluster stacked column series in groups.

Data Navigation
Demo that illustrates how to zoom and scroll DateTime data with Data Navigation functionality.

RadGrid
Export Hierarchical Grid
New code-library to demonstrate exporting of a hierarchical structured grid.

Virtualization blog post
New blog post about the benefits of the Virtualization feature.

RadMediaPlayer
RadMediaPlayer blog post
New blog post about the key features of the control.

RadLightBox
RadLightBox blog post
New blog post about the key features of the control.

[Hristo Valyavicharski]

RadScheduler
Pdf Export - Overview
This help article lists all RadScheduler common properties used in the RadScheduler PDF Export.

Pdf Export - Using custom style sheet files
Help article, which shows how to configure RadScheduler to be exported with custom styles.

Pdf Export - Page settings
This help article shows all properties and settings related to the Page dimensions, orientation and the paging functionality that the RadScheduler PDF export functionality offers.

RadHtmlChart
Easily Show Data Trends with the Sparklines Layout of RadHtmlChart for ASP.NET AJAX
New blog post about Sparklines in RadHtmlChart.

RadMediaPlayer
Getting Started
New article which demonstrates creating a media player step by step.

Designer Overview
New article explaining the use of the player's Smart Tag in design-time.

Server Side Basics
New article which shows the server-side API of the player.

[Hristo Valyavicharski]

Common
HTML5 Compliance
Contols' compliance sheet with the newest HTML standard.

RadCloudUpload
Files Uploading in Custom Folder at Runtime
Help article explaining how to upload files in folder which is set dynamically.

RadLightBox
Difference from RadWindow
New article which describes the main differences between the two controls.

Designer Overview
New topic explaining the configuration of the control in design-time.

DataBinding Basics
New article about the DataBinding specifics of the lightbox.

Templates
New topic which explains creating Templates for the control.

[Hristo Valyavicharski]

RadEditor
Built-in Dialogs' Autosize feature is enabled
This help article shows how to define the size of a customized dialog of RadEditor.

RadScheduler
Skins
Useful forum post explaining step by step how to resolve issues related to skins loading.

RadGrid
Combining different edit modes
This project demonstrates how to combine different edit modes in RadGrid.

[Hristo Valyavicharski]

RadMenu
Click To Open
Updated help article describing the RadMenu's Click To Open functionality.

Multi Column Menu
Updated help article for the Multi Column Menu functionality.

RadHtmlChart
Zoom and Scroll Data Over Time with RadHtmlChart for ASP.NET AJAX
New blog post about zooming and scrolling data over time with RadHtmlChart.

RadGrid
Custom Range Grouping
This project demonstrates how to create custom range grouping with RadGrid.

[Hristo Valyavicharski]

Common
How to get your ASP.NET application working in IE11
Blog post about fixing the problems in your application after upgrading to IE11.

RadCloudUpload
Limit the Number of the Uploaded Files
New help article explaining how to create a custom limitation.

Prevent Dual File Uploading
New help article explaining how to stop uploading of file, which has already been uploaded.

RadHtmlChart
Important Changes Regarding Series Declaration
New help article about important changes in the programmatic creation of series items.

[Slav]

RadHtmlChart
RadHtmlChart vs RadChart, round 3 – RadChart is down and it is obsolete
Blog post about RadChart becoming obsolete.

Migrating Series Configuration
Help article explaining how to migrate the configuration of series and series items from RadChart to RadHtmlChart.

Migrating Axes Configuration
Help article explaining how to migrate the configuration of Y and X axes from RadChart to RadHtmlChart.

Migrating Date Axis Configuration
Help article explaining how to migrate the configuration of date axis with discrete and continuous data from RadChart to RadHtmlChart.

Migrating Functionalities - Features and Series Types Parity
Help article that describes the known limitations of the features and series types in RadHtmlChart when migrating from RadChart.

[Hristo Valyavicharski]

CloudUpload
Change file name before upload
Informative forum post for one of the most common upload scenarios.

[Hristo Valyavicharski]

RadScheduler
Import iCalendar Data
Updated KB, which demonstrates how to import data from iCalendar file into RadScheduler.

[Eyup]

RadMediaPlayer
Playlist
The control now provides built-in Playlist feature.

Banners
The player can now display various Banners over the media.

RadLightBox
Animations
The sample demonstrates the Animation customization provided by the control.

PageLayout
Responsive Layout
PageLayout is a new control and this help article gives a brief overview of the Responsive Layout.

View Breakpoints
Article which describes the meaning of the viewport breakpoints for RadPageLayout and their usage.        
    
Defining Structure in Code-Behind
This article demonstrates how to define the structure of the RadPageLayout from code-behind.     

[Slav]

RadTileList
Responsive Layout
Help article about the new responsive layout of RadTileList.

RadHtmlChart
Migrating Data Binding Configuration
Help article about migrating the configuration of data binding with discrete and continuous data from RadChart to RadHtmlChart.

Box Plot Chart
Help article about configuring a Box Plot chart.

HtmlChart - Box Plot Chart
Demo that illustrates the configuration of a Box Plot chart.

RadMenu
Mobile Rendering
Help article for the new menu's render mode.

[Slav]

RadHtmlChart
Funnel Chart
Help article about configuring a Funnel chart.

HtmlChart - Funnel Chart
Demo that illustrates the configuration of a Funnel chart.

Polar Chart
Help article about configuring a Polar chart.

HtmlChart - Polar Chart
Demo that illustrates the configuration of a Polar chart.​

 

 

[Eyup]

RadImageGallery (NEW Control)
Overview
The default demo of the new image gallery control.

RadPivotGrid
Custom Data Calculations
This sample demonstrates how to implement custom data calculations with the summarization control.

 
RadDeviceDetectionFramework
Overview
Help article for the new Device Detection library.

 

[Slav]

Common
How to integrate unit tests with desktop applications using the Telerik Testing Framework in Visual Studio
Blog post about using a desktop application in a web test via Telerik Testing Framework.

RadHtmlChart
Radar Chart
Help article about configuring a Radar chart.

HtmlChart - Radar Chart
Demo that illustrates the configuration of a Radar chart.

RadMediaPlayer
Playing Video on IE
Explains the specifics when using the video player on IE.

RadGrid
Prevent Losing Batch Changes
A useful addition when using Batch editing mode.

 

[Slav]

RadHtmlChart
Spline Chart
Help article about configuring a Spline chart.

Step Line Chart
Help article about configuring a Step Line chart.

HtmlChart - Spline and Step Line Chart
Demo that illustrates the configuration of Spline and Step Line charts.

RadAsyncUpload
Large file uploading.
Updated help article.

RadImageGallery
Add Stunning Image Sliders in Seconds
Demonstrates adding attractive image sliders to your ASP.NET Apps with a few steps.

 

[Slav]

RadHtmlChart

Gap and Spacing
Help article about configuring the gaps between the series categories and the spacing between the chart series items.

Plot Bands
Help article about configuring plot bands in the chart.

RadSearchBox
AutoComplete
Updated help article.

RadAsyncUpload
How to upload files from MAC or Linux.
New help article explaining how to upload files with invalid Windows names.

RadMediaPlayer
Mobile Support
Explains the specifics when using the video player on mobile devices.

 

[Slav]

Common
Skin Exchange
Includes the required files for the obsoleted skins.

RadHtmlChart
HtmlChart - Plot Bands
Demo that illustrates the configuration of plot bands in the chart.

HtmlChart - Data Navigation
Demo that is updated with the ability to configure different date formats for particular base units.

RadAutoCompleteBox
Filtering
Updated help article.

 

[Eyup]

RadGrid
Setting height in percentage
This new code-library demonstrates several frequently used scenarios for setting the grid height.

RadHtmlChart
HtmlChart - Date Axis
Updated demo with the ability to set min and max dates for a category x-axis.

HtmlChart - Donut Chart
Updated demo with the ability to position the labels of the donut chart.

 

[Slav]

RadDiagram
Telerik's ASP.NET Diagram
Examples that demonstrate the new RadDiagram control.

RadDiagram Overview
Documentation of the new RadDiagram control.

RadGrid
Styling RadGrid with client-side binding
This new code-library demonstrates how to style a grid bound on the client.

 

[Slav]

RadDiagram
Diagram - End User Interaction
New demo that shows the different ways, in which you can interact with the diagram elements.

RadHtmlChart
HtmlChart - Bar Chart
Demo updated with the ability to configure gaps between the series categories and the spacing between the chart series items.

 

[Slav]

RadDiagram
Diagram - Layouts
New demo that shows the built-in layouts for arranging the shapes in a diagram.

RadHtmlChart
HtmlChart - Column Chart
Demo updated with the ability to configure gaps between the series categories and the spacing between the chart series items.

RadGrid
Multi-column edit form
This new code-library demonstrates how you can use the built-in properties of the grid columns to configure the auto-generated Edit Form into multi-column table.

 

[Hristo Valyavicharski]

Common
Mobile Support and Responsiveness
New help article about the support for responsive web design provided by UI for ASP.NET AJAX.

Responsive, Adaptive and Elastic Capabilities 
New help article with the responsive capabilities the controls from the UI for ASP.NET AJAX suite offer.

Render Modes
New help article with information about the render modes each control from the UI for ASP.NET AJAX suite supports.

RadAutoCompleteBox
Implementing Search Functionality in ASP.NET Websites with RadSearchBox
New blog post explaining how to setup and use RadAutoCompleteBox control.

RadDiagram
Diagram - JSON Import and Export
New demo about saving and loading data in JSON format with RadDiagram for ASP.NET AJAX.

RadTreeList
Recursive client-side selection
This new code-library demonstrates client-side recursive item selection of RadTreeList when its paging is not enabled.

 

[Slav]

RadDiagram
Diagram - Data Binding
New demo that shows the data binding of diagram shapes and connections.

Diagram - Client-Side Programming
New demo that introduces the client-side capabilities of RadDiagram.

RadGrid
Visualizing Percentage Data as Progress Bar
This code library demonstrates how to style all cells in a column in such manner, so a percentage value could be presented as a progress bar within the cell.

 

[Slav]

RadDiagram
Diagram - Server-Side Programming
Demo that shows how to configure the diagram on the server.

Diagram - Customize Diagram Elements
Demo that shows how to customize the appearance of the diagram elements.

 

[Slav]

RadDiagram 
Custom Shapes and Connectors
Help article that explains how to create custom shapes in a diagram and configure their connectors.

 

[Slav]

RadHtmlChart
Explode Pie or Donut Series on Click or Mouseover
Code Library article about toggling the explode state of a Pie/Donut series item in the chart when the item is clicked or hovered. 

 

[Slav]

Common
Included Assemblies
New help article about the assemblies that are included in the Telerik UI for ASP.NET AJAX installation.

PDF Viewer with Window and PDF.js
A sample integration project of RadWindow with PDF.js to build a PDF viewer control.

RadMap
RadMap - Telerik's ASP.NET Map
Overview demo of the new RadMap control.

Overview
Overview help article of the new RadMap control.

 

[Slav]

RadMap
Map - Tile Layers
Demo that shows how to load maps from different Web Map Tile Services.

Map - Markers
Demo that shows how to add points of interest to the map.

Getting Started with RadMap
Help article that shows how you can start using the RadMap control in an ASP.NET project.

RadMap Element Structure
Help article about the element structure of the RadMap control.

RadGantt
Gantt - Overview
Demo which shows the basics of the new Gantt control.

Gantt - View Types
Demo showing the different view types.

RadClientDataSource
ClientDataSource - Overview
Demo for the new client data source control.

Client DataSource Help
Online help documentation for the RadClientDataSource control.

Integration with RadGrid
This live sample demonstrates sample integration of the data source control with a prime data-vizualization control.

 

[Slav]

Common
New export and import capabilities
An elegant solution with the Document Processing Library (DPL) which gives you the freedom to create, export, and import documents of various formats (Docx, Xslx, Rtf) with ease.

RadMap
Map - Shapes Layer
Demo that shows how to data bind, display and customize shapes with RadMap.

Map - Cross-Layer Integration
Demo that shows how to combine all three MapLayer types available in RadMap: Tile, Shape and Marker.

RadHtmlChart
Displaying Grand Total In Stacked Series Labels And Pie Series Legend
New Knowledge Base article about displaying grand total In stacked series labels and pie series legend.

 

[Eyup]

Common
AJAX Control Toolkit Compatibility
This sticky forum thread explains the main specifics when using Telerik UI controls in conjunction with AJAX Control Toolkit.

Gantt
Server events
New help article describing the server events of RadGantt control.

RadEditor
Import and Export to Word
New help article that describes how to integrate the Telerik Document Processing library to export/import the RadEditor content to/from a Word document.

RadHtmlChart
Group RadHtmlChart Data Source
New Code Library article about manually grouping a data source, so that its structure is suitable for a chat data-binding.

 

[Slav]

RadTileList
Drag and Drop with ContentTemplateTile that has input elements
New Knowledge Base article that shows how you can use form elements (inputs, buttons, RadInputs, RadButtons, etc.) in a RadContentTemplateTile inside a RadTileList with EnableDragAndDrop=true.

RadWindow
Creating parent-child relationships between RadWindows and passing data between them
New Code Library article that shows how you can create a parent-child relationship between multiple RadWindows.

 

[Slav]

RadHtmlChart
RadHtmlChart in a Responsive Web Page
New Code Library article that shows how to resize a RadHtmlChart in a responsive web page.

 

[Slav]

RadRotator
Rotator - Binding to Telerik ClientDataSource
Demo that shows how you can data bind RadRotator on the client to a RadClientDataSource control.

Client-side Data Binding
Help article that introduces the client-side data binding feature of the RadRotator control.

 

[Eyup]

RadPersistenceFramework
Custom Storage Provider
This new help article explains the ability of the RadPersistenceFramework for using a different provider to store the save state of the controls.

 

 

[Slav]

RadWindow
RadWindow Client-side Basics
New article that describes how to get a reference to the RadWindow in different scenarios and how to use the control on the client.

 

[Slav]

RadMap
Elastic Design with RadMap
Help article that explains the elastic design capabilities of RadMap.

 

[Slav]

RadMap
Fluid Design with RadMap
Help article that explains the fluid design capabilities of RadMap.

 

[Slav]

RadProgressBar
RadProgressBar - Telerik's ASP.NET ProgressBar
Demo that shows the basics of the new ProgressBar control.

RadProgressBar Overview
Help article that describes the basics of the new ProgressBar control.

 

[Slav]

Common
TypeScript Definitions
New help article that explains how to obtain and use the TypeScript definitions available for the Telerik UI for ASP.NET AJAX suite.

jQuery Troubleshooting
New help article that contains information about the most common issues related to the jQuery library that is embedded in the Telerik UI for ASP.NET AJAX suite and more specifically configuring Unobtrusive Validation.

Creating a Custom Skin
Explains the different options when creating a custom skin for the controls.

RadEditor
Elastic Design with RadEditor
New help article that explains the elastic design capabilities RadEditor offers.

Import and Export to Word
New help article that explains the import and export from/to Word document functionality of Telerik Editor .

RadImageEditor
Predefined Effects
Demonstrates a possible implementation for integrating custom, predefined effects in RadImageEditor, with a preview of each effect in a RadWindow, allowing the user to easily decide which effect to apply.

RadTreeMap
Overview
RadTreeMap is new control which displays a hierarchical tree-structured data as a set of rectangles.

TreeMap Online Help
Set of help articles for the new RadTreeMap control

RadWizard
Overview
Main online demo of the new Step-by-Step user control.

RadWizard Online Help
Help section for the RadWizard control.

 

[Slav]

RadEditor
Editor - Inline editing
New demo that shows how to use RadEditor to edit parts of the page inline.

Editor - Render Mode
New demo that shows the Lightweight render mode of RadEditor.

 

[Slav]

RadProgressBar
ProgressBar - Orientation
Demo that shows the available options for configuring the orientation of RadProgressBar.

ProgressBar - Custom Label
Demo that shows how to customize the label in RadProgressBar.

 

[Slav]

RadProgressBar
ProgressBar - Chunk
Demo that shows how you can display the completed steps of a discrete process.

ProgressBar - Right to Left Support
Demo that shows the Right-to-Left direction support that is provided by RadProgressBar.

 

[Eyup]

RadGrid
Pin Option for Frozen Columns
This sample demonstrates a convenient functionality to provide the end user with dynamic arrangement of the frozen columns.

 

[Slav]

Common
web.config Settings Overview
New help article that explains the entries a Telerik-enabled Web Site or Web Application has.

Adding the Telerik Controls to Your Project 

Updated help article that explains how to add the Telerik controls in a project and in a WebForm.

Disabling Embedded Resources
Updated help article about disabling embedded resources that now has a clearer structure.

Deploying a Telerik-enabled WebApplication
New help article about deploying Telerik-enabled WebApplication.

 

[Slav]

Common
Upgrading a Trial to a Developer License or to a Newer Version
Updated help article that now has clearer instructions for upgrading the Telerik controls, as well as information about resolving common issues that occur when upgrading.

Using the Global Assembly Cache
Updated help article that explains the basics on using the Global Assembly Cache (GAC) with the Telerik controls. 

RadMap
Find Location by Address
In this Code Library you will find out how easy it is to integrate Bing Locations Service with RadMap and allow the user to find location by address or by name.

 

[Eyup]

RadGrid
Copy/Paste data with Batch editing
This code-library demonstrates how to implement Copy-Paste functionality for cells and rows for RadGrid in Batch Edit Mode with RadContextMenu.

 

 

[Eyup]

RadGrid
Batch Validation and Related RadComboBoxes
This Code Library provides an extension for the RadGrid Batch Editing functionality, which allows you to implement related RadComboBoxes functionality between columns and to set Batch Validation.

 

 

[Slav]

RadEditor
Show or hide the DOM Inspector module via an Editor tool
New Code Library article that shows how you can toggle the DOM Inspector module on and off via a custom button that is added to the header of RadEditor.

[Slav]

RadEditor
Editor - Adaptive Behavior
New demo that shows the Mobile rendering of RadEditor, that is especially designed for mobile devices.

Phone Layout Overview
New documentation section about the Mobile rendering of RadEditor.

RadEditor in Full Screen Mode is Hidden Behind other Elements
New Knowledge Base article about configuring RadEditor to be fully visible when you put it in Full Screen Mode.

RadHtmlChart
HtmlChart - Visual Templates
New demo that shows the visual templates of RadHtmlChart.

HtmlChart - Chart Element Customization
Updated demo that shows new customization options for RadHtmlChart.

RadGrid
Option to show all items in the pager dropdown
A new property named EnableAllOptionInPagerComboBox which will add a new item with text "All" in the pager dropdown.

[Nencho]

RadClientExportManager
Change the Exported Content before Export
New help article that explains how you can change the exported content just before the export starts.

Exporting Special Characters
New help article, which demonstrates how you can use custom fonts to export non-ASCII characters to PDF.

PDF Multi-page Export
New help article that explains how you can split the exported content to different pages in the output PDF file.

RadProgressArea
Render Modes
New demo that shows the Lightweight render mode of RadProgressArea.

RadScheduler
Render Modes
New demo that shows the Lightweight render mode of RadScheduler

RadTabStrip
Render Modes
New demo that shows the Lightweight render mode of RadTabStrip.

[Eyup]

RadImageGallery
Access Unique DataKeyValue and Delete Images
This new code-library demonstrates how to access any other field value from the related data source record by adding the fields in the DataKeyNames collection.
​

[Eyup]

RadImageGallery
Templates
RadImageGallery now provides Templates for its items.

Templates Demo
A live sample demonstrating the recently introduced Templates for RadImageGallery.

[Eyup]

RadMediaPlayer
Subtitles
The control comes with a convenient feature of loading and showing any desired subtitles.

[Eyup]

RadDataForm
Live Sample
RadDataForm is a recently introduced data oriented control, which displays the values of a single record or collection of data items from a DataSource using user-defined templates.

Integration with RadGrid
This demo illustrates how you can use DataForm as an external edit form of RadGrid.

Overview
You can also check the online documentation about the control.

[Eyup]

RadMediaPlayer
Adding Custom Button to Titlebar and Toolbar
This sample demonstrates how to add custom buttons dynamically to the RadMediaPlayer control.
​
RadFormDecorator
Decorating Heading Tags
The article describes the important changes of RadFormDecorator in Lightweight in the Q3 2015 release.

RadImageEditor
Elastic Design for RadImageEditor
The article shows how to take advantage of the elastic design of RadImageEditor.

RadFileExplorer
Elastic Design for RadFileExplorer
The article shows how to take advantage of the elastic design of RadFileExplorer.

RadHtmlChart
Date Axis Base Unit Steps
The article illustrates how to configure the step for a date axis in the RadHtmlChart.

[Eyup]

RadPivotGrid
Customize the Configuration Panel positioning behavior
This web site includes two samples to demonstrate how to modify the positioning and layout settlement of the Configuration Panel to implement a more convenient behavior to the end user.

[Danail Vasilev]

RadHtmlChart 
HtmlChart - Responsive Chart
A new live demo that showcases how to create a responsive chart.

RadImageEditor 
ImageEditor - Render Modes
A new demo that shows the Lightweight render mode of RadImageEditor .

RadScriptManager
Combined CDN Request for Telerik Controls 
An article about optimizing Telerik scripts CDN request to a single file.

RadDiagram
Shape Templates
An article about defining visual templates for shapes.

[Danail Vasilev]

RadEditor
Paste at the Cursor Position
New article that explains how to paste content into RadEditor at the cursor position programmatically.

RadSocialShare 
Render Modes
New article that shows the Lightweight render mode of RadSocialShare.

Elastic Design
New article that illustrates the elastic capabilities of RadSocialShare.

Fluid Design
New article that illustrates the elastic capabilities of RadSocialShare.

RadScriptManager
Encrypt Telerik WebResource Querystring
New article that showcases how to encrypt querystring parameters in the Telerik WebResource request.

RadSlider
ItemType set to Item
New article section that treats configuring Item ItemType in RadSlider.

RadToolTip
Controlling Scrolling
New article section that treats tooltip's content overflow issues.

Telerik Static Client Library
AnimationFramework Example
An example that showcases how to work with transition (AnimationFramework) from the Telerik Client Static Library

[Danail Vasilev]

RadSplitter
Render Modes
New help article about Lightweight Render Mode of RadSplitter.

Elastic Design
New help article about elastic design of RadSplitter.

Missing Empty Message
A new section in Printing Problem article that treats adding inline content inside RadPane.

RadFileExplorer 
Render Modes
New help article about Lightweight Render Mode of RadFileExplorer.

RadColorPicker
Render Modes
New help article about Lightweight Render Mode of RadColorPicker.

Elastic Design
New help article about elastic design of RadColorPicker.

RadSocialShare
Tweet Event of a Twitter Button is not Fired Under IE
New known limitations article about firing Tweet Event under IE.

General Information
Designer files are not updated or are missing Telerik controls
A new section in Design-Time trouble shooting article about updating designer files.

RadHtmlChart
Export to PDF or Image with RadClientExportManager
New help article about exporting RadHtmlChart on the client-side with RadClientExportManager.

[Danail Vasilev]

RadEditor
Using ContentAreaCssFile Property
New article that examines the main purpose of the ContentAreaCssFile property.

Decorating Div Content Area
New article that explains how to decorate the content area of RadEditor when the ContentAreaMode property is set to Div.

ContentAreaCssFile vs. CssFiles
New article that treats major differences regarding custom content area stylization via ContentAreaCssFile property and CssFiles collection.

CSS Styles
Updated version of the article that treats the usage and configuration of the Apply CSS Class tool.

RadHtmlChart
Put Label in Donut Chart Center
New code library that shows how to place a label inside the whole of a donut series.

RadImageEditor
PNG Transparency with InsertImage Limitation
New article that treats a limitation of PNG transparency loosing with non-Canvas mode.

RadProgressArea
Enable Single Click Button after Cancel Click
New article that explains how to enable again a RadButton with SingleClick=true when the user cancels the progress/upload.

RadTileList
Elastic Design
New help article about elastic design of RadTile.

Fluid Design
New help article about fluid design of RadTile.

RadToolTip
Sys.WebForms.PageRequestManagerServerErrorException: the status code returned from server was: 0
New section in Common Issues article of RadToolTip that treats a specific issue.

[Danail Vasilev]

RadAjax
Known Reasons for Error Messages
New article about common reasons for error messages and their solutions with RadAjax.

Appearance Issues when Control is Added During AJAX Request
New section in Skins Troubleshooting article about appearance issues after AJAX requests.

RadEditor
External CSS Files
Updated version of the article about importing external CSS files to the content area of RadEditor.

RadWindow
Show RadAlert that Blocks the Entire Page
Updated version of the article about blocking the page with RadAlert.

OnClientClose is not Fired
A new troubleshooting section for RadWindow about firing the OnClientClose event.

Troubleshooting
Could not load file or assembly 'Telerik.Web.UI' After Upgrade
A new section in upgrading troubleshooting article about wrongly referenced telerik assemblies.

[Nencho]

Licensing
License File
Added a paragraph that treats issues with the licensing file and automated MS build tasks.

RadButton
Custom Height Tutorial
Included note regarding easier height customization with the Lightweight render mode.

RadRotator
Fluid Capabilities
An updated version of the fluid capabilities article of RadRotator.

RadSpreadsheet
New ExportToPdf demo for RadSpreadsheet
The demo shows how to export the content, filled in the Spreadsheet, using ClientExportManager.

New Filter and Sort demo for RadSpreadsheet
The demo exhibits the default Filter and Sort functionalities that the RadSpredsheet control provides.

New Validation demo for RadSpreadsheet
This demo shows the inbuilt data validation in Telerik ASP.NET AJAX Spreadsheet control.

Client-side programming documentation
New documentation section, describing in details the usage of the Client API of the RadSpreadsheet control.

RadWindow
Smart Tag
Added information regarding using the ContentTemplate of RadWindow in Design View.

[Danail Vasilev]

General Information
web.config Settings Overview
Added note about excluding handlers in routing.

Controlling Visual Appearance Overview
Added information that the material skin is available only for the lightweight render mode.

RadEditor
Add Your Own Buttons
A new section that treats adding new tools without replacing the existing toolset.

Importing from Word document
Added example about importing .rtf documents.

RadTileList
Group Tile
A new section about defining group to tiles.

RadSpreadsheet
Context Menu Overview
A new documentation section explaining the functionality of the built-in Context Menu.

RadSpreadsheet
Custom Context Menu
A new documentation section explaining how the control's Context Menu can be customized.

RadSpreadsheet
Filter Menu Overview
A new documentation section explaining the functionality of the Filter Menu.

RadSpreadsheet
Custom Filter Menu
A new documentation section explaining how to create a custom Filter Menu.

RadSpreadsheet
Cell Format Overview
A new documentation section explaining how the control's formatting options can be accessed

RadSpreadsheet
Custom Cell Format
A new documentation section explaining how to customize the Format Dialog and listing the formatting options.

RadSpreadsheet
Validation Overview
A new documentation section explaining the structure of the Validation Dialog.

RadSpreadsheet
Custom Validation
A new documentation section explaining how to customize the Validation Dialog.

[Danail Vasilev]

RadEditor
Editor Content Is Not Saved After AJAX Update
A new section in the article that treats a scenario with RadCheckBox.

RadPushButton
Overview
New demos about RadPushButton control.

RadLinkButton
Overview
New demos about RadLinkButton control.

RadImageButton
Overview
New demos about RadImageButton control.

RadCheckBox
Overview
New demos about RadCheckBox control.

RadToggleButton
Overview
New demos about RadToggleButton control.

RadWindow
Alert, Confirm, Prompt Dialogs Overview
Improved structure and added information regarding defining the proper dimensions of a window with large content.

Installation
Included Assemblies
Improved the information about the included assemblies.

RadSpreadsheet
Implementing Custom Provider
A new documentation section explaining how to implement a Custom Provider.

RadSpreadsheet
Custom Database Provider Code Library
A new Code Library example demonstrating how to use a Custom Provider.

RadToolBar
Responsive Design
A new documentation section explaining the control's responsive capabilities.

[Danail Vasilev]

RadPushButton
Overview
New articles about RadPushButton control.

RadLinkButton
Overview
New articles about RadLinkButton control.

RadImageButton
Overview
New articles about RadImageButton control.

RadCheckBox
Overview
New articles about RadCheckBox control.

RadToggleButton
Overview
New articles about RadToggleButton control.

RadSpreadsheet
Programmatic Binding
New article showing how the control can be bound programmatically.

RadScheduler
Article
New WCAG 2.0 and Section 508 Accessibility Compliance article.

RadMenu
Article
New WCAG 2.0 and Section 508 Accessibility Compliance article.

[Ivan Danchev]

RadSpreadsheet
Known Limitations
New article about the control's known limitations.

AutoCompleteBox
Client-Side Programming Events
New article about the control's client-side events.
​
StyleSheetManager
Serving External Style Sheets
Article updated with new information on how to add external style sheets from the code-behind.

AutoCompleteBox
Client-Side Programming Overview
Article updated with new client-side methods and examples.

[Danail Vasilev]

RadEditor
Scale Map to Markers
A new article that illustrates how you can programmatically scale RadMap based on the Markers collection.

Get Client-side Reference to a Control Object
A new article that shows how to get a client-side reference to a Telerik UI for ASP.NET AJAX control and use its clients-side API.

Strip HTML on Paste
A new article that shows how to strip HTML tags from content that is pasted in RadEditor.

Print Content with Styles
A new article that shows how to print the content of the editor along with the styles.

[Danail Vasilev]

RadWindow
RadGrid Can be Focused Behind a Modal RadWindow
New KB that shows how to prevent the end user from focusing and operating with RadGrid when modal RadWindow is opened.

RadHtmlChart
Localization
Updated the example of the localization chart article.

Legend Settings
New article that illustrates how to configure the legend in the chart (basic settings, client templates, visual templates and troubleshooting steps).

RadEditor
Disable Context Menu
Updated article that shows how to disable the editor context menu from the client-side and server-side.

Move ShowOnFocus Toolbar to a Different Location
New article that shows  how to move the toolbar's popup element of editor to a different location on the page when ToolbarMode is set to ShowOnFocus.

Print Content when using Div ContentAreaMode
New help article that illustrates how to create a custom print tool that will print the contents of a div content area.

Updated Keyboard Support demos and documentation articles for the following controls:
RadComboBox, RadDropDownList, RadListBox, RadMenu, RadPanelBar, RadTabStrip, RadToolBar, RadNavigation, RadAsyncUpload

RadSpreadsheet
Enable/Disable cells demo
A new demo showing how the enabled state of a Spreadsheet Range can be managed

RadSpreadsheet
Localization demo
Demo updated with German localization.

RadTabStrip
Custom CSS classes demo
An updated demo showing how the tabs' appearance can be controlled.

RadToolBar
Unique Item Appearance demo
The updated demo shows how the ToolBar items' CssClass and ImageUrl properties can be used, in order to create unique item appearance.

RadScheduler
Drag and Drop Appointment from Scheduler to Grid HowTo article
Binding to SignalR HowTo article

[Danail Vasilev]

​General Information
Fonts
Updated the location of the Roboto font loading for the Material skin.

RadRotator
How to Configure Size of Rotator with Buttons
New help article illustrates how to properly configure the size of a rotator with buttons so that the items are not cut or misaligned

RadAjaxManager
Tips and Tricks for Ajaxifying Specific Controls
Updated Ajaxifying Container Controls section

RadCaptcha
Performance Optimization by Disabling Audio Handler
New help article describes how to improve the performance of your ASP.NET application by disabling the captcha audio handler

RadButton
Distorted Appearance
New help article that describes what to do when you have an appearance issue with RadCheckBox.

Elastic Design
Updated section in the article that states the control font-size is inherited from the page.

RadAsyncUpload
How to Extend the RadAsyncUpload handler
Article updated with information on the AddCacheDependency, CheckOriginalFileNameForInvalidChars and ChangeOriginalFileName methods.

RadAsyncUpload
Prevent Page Submitting While Uploading File
New section added to the article for the RadAsyncUpload using Lightweight render mode.

RadDropDownList
Skins
New article showing the built-in skins of the control and explaining how to customize the skin.

RadMenu
Change RenderMode According to Current Window Size
New article demonstrating how to change the RadMenu's RenderMode, based on the size of current window.

RadDropDownTree
Getting Started
New Getting Started help article for the RadDropDownTree control.

RadNavigation
Navigation Object
NavigationNode Object​
NavigationNodeCollection Object​
Three new articles listing the most important client-side methods of the Navigation, NavigationNode and NavigationNodeCollection objects.

[Danail Vasilev]

RadEditor
Nested Context Menus
New article that shows how to configure RadEditor with nested context menus

RadHtmlChart
Using Client Templates in Legend and Axes Labels
New article that illustrates how to configure client templates in legend and axes labels of the chart.

RadGrid
Command Item Template
Added new section about creating custom CommandItemTemplate for batch edit mode.

RadToolTip
Common Issues
Added new section about AJAX-enabling RadToolTip Content

Upgrading Instructions
Upgrading a Trial to a Developer License or to a Newer Version
Added tip about upgrading Telerik controls.

Troubleshooting
Skins Troubleshooting
Added new section about observing and resolving incorrect appearance of the Telerik UI for ASP.NET AJAX controls .

Integration with SharePoint
Telerik WebParts for SharePoint 2016
New article that explains how to use the Telerik WebParts for SharePoint 2016.

General Information
How Skins Work
Added new section about skin folder structure and render mode and skins.

[Ivan Danchev]

RadDropDownTree
WCAG 2.0 and Section 508 Accessibility Compliance
New article about the control's WCAG 2.0 and Section 508 Accessibility Compliance.

RadDropDownList
WCAG 2.0 and Section 508 Accessibility Compliance
New article about the control's WCAG 2.0 and Section 508 Accessibility Compliance.

RadRibbonBar
XML Export & Import
New article showing how XML data can be Imported/Exported with the RadRibbonBar.

RadListBox
Render Modes
New article containing information on the different render modes supported by the RadListBox.

RadSpreadsheet
Could not load file or assembly Telerik.Web.Spreadsheet
New Spreadsheet troubleshooting article.

RadSpreadsheet
Object reference not set to an instance of an object
New Spreadsheet troubleshooting article.

RadScheduler
Setting RowHeight According to the Currently Used Font Size
New article about the RadScheduler's RowHeight property relation to the font-size.

RadScheduler
Drag and Drop Appointment from RadScheduler to RadScheduler
New article explaining how a custom drag and drop scenario between two instances of the control can be implemented.

RadAsyncUpload
WAI-ARIA Support
New article demonstrating how to enable and use the WAI-ARIA support of the RadAsyncUpload.

RadListBox
Adding Images and Checkboxes to Items
Article updated with screenshots and code-snippets.

RadAutoCompleteBox
OnTextChanged
OnTextChanged event article updated.

RadAutoCompleteBox
WAI-ARIA Support
Article notes updated.

RadDropDownList
WAI-ARIA Support
Article notes updated.

RadComboBox
WAI-ARIA Support
Article notes updated.

RadComboBox
WAI-ARIA Support
Article updated with information on the use of WAI-ARIA and Templates in the RadComboBox.

RadSpreadsheet
Getting Started
Assembly References section updated.

RadScheduler
Misalignments
Recommended Minimal RowHeight Property Values section updated.

Installation
Included Assemblies
Article updated with information about the Spreadsheet library.

[Danail Vasilev]

Installer and VS Extensions for ASP.NET AJAX
Included Assemblies
Added information about the inclucded Newtonsoft.Json.dll assembly.

RadDiagram for ASP.NET AJAX
Using FontAwesome in RadDiagram Visual Templates
A new article that illustrates how to integrate the FontAwesome icons in Visual Templates in RadDiagram.

RadEditor for ASP.NET AJAX
Toggle CSS Files from the CssFiles Collection
A new article that shows how to create a custom tool that toggles the decoration of the CSS files included through the CssFiles collection.

Using RibbonBar Toolbar
A new article that shows how to configure the RibbonBar toolbar of RadEditor.

Export to PDF
A new section that shows how to export the editor contents to PDF on the client by using RadClientExportManager.

RadHtmlChart for ASP.NET AJAX
Display HTML and Execute JavaScript
A new subsection that shows how to call functions inside RadHtmlChart templates.

RadMap for ASP.NET AJAX
Layer Clustering on Zoom Level
A new article that illustrates how to configure different layer to show on different zoom level.

RadRotator for ASP.NET AJAX
Initially Hidden Rotator Does not Show
A new troubleshooting article that treats an issue with showing a hidden RadRotator.

RadWindow for ASP.NET AJAX
Dropdown Does not Move or Close with RadWindow
A new KB about that resolves an issue with the visibility of an expanded RadDropDown/RadCombobox inside RadWindow when the last moves.

OnClientPageLoad
Added an example that shows how to change the title and status bar of RadWindow.

UI for ASP.NET AJAX
This is an Invalid WebResource Request
Added information about troubleshooting the "This is an invalid webresource request" error.

Unauthorized Access (401) Error
A new section that threats authentication issues with web resources.

[Danail Vasilev]

RadButton for ASP.NET AJAX
Flat Button
A new help article that shows how to get a flat button from a RadPushButton with the Material Skin.

RadEditor for ASP.NET AJAX
Configure Browser Spellcheck in RadEditor
A new help article that shows how to adjust the native browser's spellcheck.

Strip Pasting Tools
A new help article about the built-in Paste Strip dropdown in RadEditor, and the Paste Strip tools exposed inside.

RadFormDecorator for ASP.NET AJAX
Flat Button
A new help article that shows how to get a flat button from a RadFormDecorator with the Material Skin.

RadHtmlChart for ASP.NET AJAX
Create Custom Skin
A new help article that illustrates how to create a custom skin for RadHtmlChart.

Data Binding Overview
A new help article that describes the required data structure for RadHtmlChart.

Embed RadHtmlChart in PDF on the Server-side
A new help article that suggests different options to export RadHtmlChart to PDF on the server.

Create Line Chart With Multiple Colors
A new help article that offers a solution for multiplecoloring the line series.

Chart with display: none Does not Show Itself
A new troubleshooting section about showing a hidden chart.

Web Parts for SharePoint
SharePoint Online (Office 365)
A new help article about the compatibility of UI for ASP.NET AJAX controls in SharePoint Online.

[Danail Vasilev]

RadHtmlChart for ASP.NET AJAX
Plot Threshold Lines
A new help article that provides different approaches for plotting threshold lines in RadHtmlChart.

RadTileList for ASP.NET AJAX
Customize Tile Size in TileList
A new article that shows an approach to set up custom dimensions for the Tiles in a TileList by using only CSS and preserving the built-in drag and drop functionality.

[Danail Vasilev]

RadHtmlChart for ASP.NET AJAX
PlotArea is Shrunk by the Legend / PlotArea Dimensions Depend on the Legend Size
A new troubleshooting section that treats defining fixed size for the chart's PlotArea

Set Gradient to PlotArea
A new help article that shows how to set a gradient color to the PlotArea of the RadHtmlChart.

[Danail Vasilev]

RadButton for ASP.NET AJAX
RadRadioButtonList Overview
Documentation about the new RadRadioButtonList control.

RadRadioButtonList - Telerik ASP.NET RadioButtonList
New demos about the RadRadioButtonList control.

RadCheckBoxList - Telerik ASP.NET CheckBoxList
New demos about the RadCheckBoxList control.

RadEditor for ASP.NET AJAX
Preserve the Content in RadEditor on Using Back Button
You can learn here possible solutions to preserve content when user has navigated to a page with RadEditor by using the browser's back button.

RadHtmlChart for ASP.NET AJAX
RadHtmlChart Types Overview
A new help article that shows a detailed list of the chart types available in RadHtmlChart, information about their purpose and the most common scenarios in which they can be used.

HtmlChart - Bullet Chart
A new demo about the bullet chart type.

HtmlChart - Vertical Box Plot Chart
A new demo about vertical box plot chart type.

HtmlChart - ClientDataSource
A new demo about integration RadClientDataSource to RadHtmlChart.

[Danail Vasilev]

RadFormDecorator for UI for ASP.NET AJAX
Decorated GridView Is Not Bound to SqlDataSource with ControlParameter
A new help article that offers a solution to an issue where a decorated asp:GridView by RadFormDecorator cannot be bound to an SqlDataSource with ControlParameter on initial page load.

RadPageLayout for ASP.NET AJAX
Columns in RadPageLayout
Updated properties table and included properties note

RadTreeView for ASP.NET AJAX
Improving Lightweight Rendering for RadTreeView (R3 2016)
Describes the improvements in the Lightweight Rendering for RadTreeView, introduced with R3 2016 release

[Danail Vasilev]

RadCaptcha for ASP.NET AJAX
Missing Image
A new troubleshooting article that treats issues with missing images in RadCaptcha and provides resolutions.

RadEditor for ASP.NET AJAX
Save Content with Predefined Font
A new help article that shows how to save the RadEditor's content with a predefined font.

RadSpreadsheet for ASP.NET AJAX
Server side programming Overview
Extend the article to include information about the other Objects that the RadScheduler uses: Worksheet, Row, Cell, Column

[Danail Vasilev]

RadEditor for ASP.NET AJAX
Chrome Creates Spans with Inherited Styles on Delete and Paste
A new troubleshooting article for RadEditor that treats issue with creating spans in Chrome on delete/paste.

UI for ASP.NET AJAX
jQuery Troubleshooting
A new section about jQuery runtime error in Visual Studio.

[Danail Vasilev]

RadNavigation for ASP.NET AJAX
Add OnClientNodeMouseEnter Client-Side event article
Article for handling theOnClientNodeMouseEnter Client-Side event

Add OnClientNodeMouseLeave Client-Side event article
Article for handling the OnClientNodeMouseLeave Client-Side event

Add OnClientTemplateDataBound Client-Side event article
Article for handling the OnClientTemplateDataBound Client-Side event

Add OnClientNodePopulating Client-Side event article
Article for handling the OnClientNodePopulating Client-Side event

Add OnClientNodePopulated Client-Side event article
Article for handling the OnClientNodePopulated Client-Side event

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Security
Important information on providing secure file uploads

RadCloudUpload for ASP.NET AJAX
Security
Important information on securing file uploads

RadFileExplorer for ASP.NET AJAX
Initially Hidden RadFileExplorer - appearance issues
Appearance glitches in a file explorer made visible with JavaScript and how to solve them.

RadWindow for ASP.NET AJAX
RadWindow Takes a Lot of Time to Open on IE, Especially 11
Performance issue under IE with heavy pages may slow down RadWindow opening as well. Three workarounds are available.

UI for ASP.NET AJAX
Render Modes
Added explanation on the fallback order. Includes a new feature that allows IE7 to get Lightweight RenderMode instead of Classic to improve behavior for intranet sites.

web.config Settings Overview
Added important information on required keys that must be added to secure file uploads

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Upload Files in Web Farm / Load Balancing
Some requirements that are commonly overlooked when working with shared resources in a load balanced environment.

RadClientExportManager for ASP.NET AJAX
Save Exported Files
Added example for saving file on server via page methods

RadEditor for ASP.NET AJAX
Using the Image and Document managers outside RadEditor
Updated to work with the latest R1 2017 version of UI for ASP.NET AJAX

RadProgressBar for ASP.NET AJAX
Known Issues
New article that lists known issues and limitations of RadProgressBar

UI for ASP.NET AJAX
Telerik Upgrade API Analyzer Tool
A tool that analyzes your C# code and can show you places in your code affected by changes in the Telerik UI for ASP.NET AJAX versions. Useful for a quick check before you upgrade.

[Marin Bratanov]

RadButton for ASP.NET AJAX
Select Item
Updated information on how to get and set selected items in RadRadioButtonList

RadioButtonList Object
Updated client-side API for RadRadioButtonList

RadComboBox for ASP.NET AJAX
Default Item
How to add a default item in a combo box when load-on-demand is used, so the user can always see and select them.

RadSearchBox for ASP.NET AJAX
Autocomplete
Added link and info how to pass the max results count to the searchbox service so you can return the desired number of items.

RadSpell for ASP.NET AJAX
RadSpell Object
Added info how to use browser dialogs instead of RadWindows for RadSpell. Useful for scenarios where X-FRAME-OPTIONS header prevents pages from loading in an iframe.

RadWindow for ASP.NET AJAX
Autosizing Issues
Added info on small scrollbar issues and how to avoid them.

[Marin Bratanov]

RadFilter for ASP.NET AJAX
Wrong Control is Filtered with Multiple Instances are Present on the Page
When you have several instances of a user control where a filter is in an INamingContainer, only the first control is filtered unless you pass the UniqueID

RadGrid for ASP.NET AJAX
Exporting Overview
Add information on how to export template columns.

CheckList Filtering
Added a pointer at the end on how to implement cascading excel-like filtering

Batch Editing Configuration
Added requirement/limitation of the HighlightDeletedRows feature - the first column must be visible.

RadTreeList for ASP.NET AJAX
Expand/Collapse Items
Add example on expanding an item recursively on the server.

[Marin Bratanov]

RadGrid for ASP.NET AJAX
Accessing Cells and Rows
Added example how to access custom control editors in template columns on the server

OnBatchEditOpened
Add example how to access controls in a cell and modify them according to values from other cells

Batch Editing Overview
Add information and links on how to utilize the batch edit mode and how to write custom logic with it.

Batch Editing Client-side API
Add examples how to access the batch editing API

RadTreeMap for ASP.NET AJAX
How to Use Color Ranges
How to create shades for sibling nodes based on the main node color - the article shows how to create a custom Kendo Theme that overrides the built-in theme so you can set the desired Kendo color range.

[Marin Bratanov]

RadListBox for ASP.NET AJAX
Duplicate Items after Transfer and AJAX Request
Item gets duplicated after transferring because the ClientState of the ListBox controls is not updated.

RadWindow for ASP.NET AJAX
How to Change the Dialog Templates
Updated templates list with an improvement that will be available as of R2 2017

Theme Builder for ASP.NET AJAX
Sass Theme Builder Overview
Updated the general information about the Theme Builder tool as per its new version.

Create and Download a Theme
Updated information and workflow to reflect the new version of the tool.

[Marin Bratanov]

RadTileList for ASP.NET AJAX
Images Stored in a DataBase in RadTileList
How to show images from a database in a RadTileList

RadWindow for ASP.NET AJAX
Common Issues
Add information and example on how to set and remove a restriction zone dynamically

[Marin Bratanov]

RadDataForm for ASP.NET AJAX
Manual CRUD Operations
Added example for custom template classes and how to get values from them.

RadHtmlChart for ASP.NET AJAX
RadHtmlChart Cannot be Bound to a Data Source that Has Special Characters in Its Field Names
The solution is to rename the fields, the possible workarounds were updated: added information on escaping special symbols in field names for client templates and provided example with setting series properties to such field names.

ClientTemplate Overview
Add info for the value object for BoxPlot series so you can build your custom tooltip templates.

RadRotator for ASP.NET AJAX
Rotator Moves Items Imprecisely when Buttons Clicked Quickly
When the user bashes the arrow buttons and the rotator items move imprecisely, you can use custom buttons and prevent the clicks.

[Marin Bratanov]

RadGrid for ASP.NET AJAX
Accessing Cells and Values in Client-Side Code
Added examples how to get a refernce to the grid row so you can extract data from it client-side.

Validation
Added examples how to validate user input with the Batch Edit mode

[Marin Bratanov]

RadAjax for ASP.NET AJAX
Ajaxify and Update Controls in Master and Content Page
Add important information on the types of controls that can initiate requests across content pages, master pages and user controls (they must be postback controls, not containers)

RadGrid for ASP.NET AJAX
Keyboard Support
Add information about conflicting event handlers and preventing event propagation.

RadPanelBar for ASP.NET AJAX
Templates Overview
Entire article is updated to reflect the details on how templates operate and how they should be used.

[Marin Bratanov]

RadGrid for ASP.NET AJAX
Virtualization
Updated list of limitations of the Virtualization feature with percent height.

RadScheduler for ASP.NET AJAX
Show Appointment Info Instead of Edit Form
How to double click any appointment to capture the event and not show the popup dialog or inline edit form

RadSearchBox for ASP.NET AJAX
RadSearchBox Client Object
Updated API reference to include the getters and setters for the request delay.

Telerik.Web.UI.RadSearchBox Client-side API Reference
Updated API reference to include the getters and setters for the request delay.

Wrong Results at Medium Typing Speed
New article on wrong suggestions related to delays in typing and requests.

RadTabStrip for ASP.NET AJAX
RadTab Client-side Object
Added information which method to use to select a tab when RenderSelectedPageOnly is set to the multipage.

[Marin Bratanov]

UI for ASP.NET AJAX
Old Versions Support Policy
This article explains important information on how bug fixes, enhancements and browser compatibility are updated and applied in the Progress® Telerik® UI for ASP.NET AJAX control suite

RadCaptcha for ASP.NET AJAX
Using WebFarm or WebGarden Environment
Added necessary information on using the same machine key for all servers in the farm.

RadGrid for ASP.NET AJAX
Batch Editing Validation
New example how to use several column values in validation, especially with Template Column

[Marin Bratanov]

RadEditor for ASP.NET AJAX
Error Thrown when in Spell Check mode and Page is Submitted
RadEditor throws Object doesn't support property or method 'get_commandName' when executing a command while in spell check mode. This can happen if you clean up content in the OnClientSubmit event,

Export to PDF
Updated limitations; added example of using automatic page breaks via the Kendo Drawing API.

RadGrid for ASP.NET AJAX
How to Remove Detail Tables from Export
How to prevent extra rows with detail tables from appearing in exported files.

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Security
Improved information on setting encryption keys

RadClientExportManager for ASP.NET AJAX
Known Limitations
Added an issue related to exporting RadHtmlCharts in multiple pages

RadCloudUpload for ASP.NET AJAX
Security
Improved information on setting encryption keys

RadEditor for ASP.NET AJAX
Security
Article on ensuring security with RadEditor dialogs

RadHtmlChart for ASP.NET AJAX
Series Labels Color is not Transparent
How to change the series labels so that they have transparent color in case the default does not suit your design needs.

RadPivotGrid for ASP.NET AJAX
XLSX and DOCX formats
Updated limitations to note common performance issues.

Excel
Updated limitations to note common performance issues.

RadSpell for ASP.NET AJAX
Security
Article on ensuring security with RadSpell

RadSpreadsheet for ASP.NET AJAX
New Code Library project demonstrating how to show Loading panel when saving RadSpreadsheet
An example demonstrating how to show a LoadingPanel when saving the Spreadsheet.

UI for ASP.NET AJAX
Mandatory Additions to the web.config
Improved information on setting encryption keys

[Marin Bratanov]

UI for ASP.NET AJAX
Cryptographic Weakness
Important information pertaining to the security of your sites.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Mandatory Additions to the web.config
Added information on encryption keys generation.

RadAsyncUpload for ASP.NET AJAX
Security
How to disable the default (built-in) upload handler for the entire application.

RadCloudUpload for ASP.NET AJAX
Security
How to disable the default (built-in) upload handler for the entire application.

 

RadDataForm for ASP.NET AJAX
Start in Insert Mode
How to show the insert mode of a RadDataForm

Start in Edit Mode
Start the data form in edit mode

RadGrid for ASP.NET AJAX
Batch Editing Overview
Added information on validation and preventing data loss

OnUserAction
Added example on preventing data loss in batch edit mode

OnCommand
Added example on preventing data loss in batch edit mode

Batch Editing Server-side API
Added information on validation and preventing data loss

RadPivotGrid for ASP.NET AJAX
Insert header row to pivot grid excel export
How to add a custom header to the excel export

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
FIPS Compatibility
Updated article contents; added information on .NET 3.5 FIPS issues.

Included Assemblies
Improved explanations on which assemblies to use for which .NET versions.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Installing the Telerik Controls from a NuGet Package
Added info on using NuGet on build machines

Appearance Issues when Control is Added During AJAX Request
Added one solution/workaround - to have a control of that type render on the initial load

RadAsyncUpload for ASP.NET AJAX
How to Create a Custom Handler for RadAsyncUpload
Added information on parameters received by the custom handler, improved explanations and overall readability

RadEditor for ASP.NET AJAX
Importing from Word document
Added information on encoding and importing a DOCX string.

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
UploadedFiles.SaveAs Throws FileNotFound Error with Custom Handler
When using a custom HTTP handler and you save the files in the page and not in the handler, you may get a FileNotFound error for versions prior to Q1 2016 SP1

RadCloudUpload for ASP.NET AJAX
Using the built-in Amazon S3 Provider
Updated the versions of the AWS packages that are used by UI for ASP.NET AJAX

RadGrid for ASP.NET AJAX
IgnorePaging not working on DetailTables Excel Export
How to export all data in declarative detail table hierarchy with XLS format.

Object reference not set to an instance of an object in Telerik.Web.UI.RadComboBox.OnInit
A strange and rare error thrown by RadGrid pager - some ideas and potential solutions.

RadWizard for ASP.NET AJAX
Validation
Added information on how validation works with the Previous button

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Unrestricted File Upload
Important security information.

Insecure Direct Object Reference
Important security information

How to Create a Custom Handler for RadAsyncUpload
Added information on how the temporary folder is used.

RadAutoCompleteBox for ASP.NET AJAX
Binding to DataTable, DataSet, or DataView
Improved simple data binding example to fetch data only on callbacks, when the autocomplete actually binds to data. This reduces requests to the data source and improves page performance.

Binding to Array, or ArrayList
Improved simple data binding example to fetch data only on callbacks, when the autocomplete actually binds to data. This reduces requests to the data source and improves page performance.

RadButton for ASP.NET AJAX
Validation for RadRadioButtonList
Updated article to show validation on the Client with CustomValidatiors.

RadMediaPlayer for ASP.NET AJAX
YouTube Video Only Plays in Full Screen
If the YouTube video is not visible in the "normal" mode of the media player, this can help you fix it.

RadMenu for ASP.NET AJAX
Hide Icon Column in RadMenu
How to remove the icon column space in RadMenu

RadScheduler for ASP.NET AJAX
Custom Advanced Form with required Resources
A code library describing how to add validators for custom controls, for example the Resources dropdown.

RadWindow for ASP.NET AJAX
Pinned RadWindow with Drag Enabled
How to have a RadWindow that is pinned but also allows the end user to drag it.

[Marin Bratanov]

RadGrid for ASP.NET AJAX
FilterType HeaderContext
How to get the items checked in a specific filter in the excel-like filtering mode. An example at the end shows how to access the current filter values.

RadPanelBar for ASP.NET AJAX
Templates Overview
Added important information on when to use which templates and issues that may arise if this guidance is not followed.

RadScriptManager for ASP.NET AJAX
Combining External Scripts
Added details on how to combine scripts from several folders

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Could Not Load File or Assembly 'Telerik.Web.UI' After Upgrade
What to do if you get Operation is not supported HRESULT: 0x80131515 after upgarding Telerik.Web.UI

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Incorrect positioning of controls
How to avoid or fix positioning problems with Telerik controls (applies mainly to popups and dropdowns)

RadAsyncUpload for ASP.NET AJAX
How to Capture File Upload Errors with Custom Handler
How to get meaningful error messages to the client when uploading files to a custom handler.

Unrestricted File Upload
Added information that may remove the need for applying a security patch.

Insecure Direct Object Reference
Added information that may remove the need for applying a security patch.

RadWindow for ASP.NET AJAX
Can't execute code from a freed script error when closing a RadWindow
How to avoid the Can't execute code from a freed script error when closing a RadWindow

[Marin Bratanov]

RadGrid for ASP.NET AJAX
How to Access DataItem from the Topmost Grid from UserControl EditForm
How to traverse the control hierarchy and obtain data from the parent grid from inside its user control edit form

Virtualization Limitations
Updated the list of limitations of the Virtualization feature of RadGrid

Virtualization and Custom Paging
How to fetch only some of the data for the grid virtualization features so you can improve the server performance.

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Incorrect or missing file Content-type
If the file has an unknown file extension, the file content-type is null.

RadGrid for ASP.NET AJAX
Auto-Generated Editors
Change DateTime picker properties from the code-behind for a GridDateTimeColumn must be done via their SharedCalendar and SharedTimeView properties.

RadHtmlChart for ASP.NET AJAX
How to Set Dimensions (Width and Height) to RadHtmlChart Tooltips
How to set dimensions to the tooltips

Bullet and VerticalBullet chart types
fixed information on format strings, item labels and orientation

RadListView for ASP.NET AJAX
Use Parent Data from Child Control
How to access data values from the listview item when working with events on its child controls.

RadMenu for ASP.NET AJAX
Keyboard Support and Accessibility
Added information on how tabIndex attributes work so that keyboard support is enabled to facilitate accessibility

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
CDN Fallback to Local Resources
A drag-and-drop example of implementing a fallback from the Telerik CDN to local resources in case the client does not have a connection to the cloud.

RadPivotGrid for ASP.NET AJAX
Load On Demand for RadPivotGrid ToolTips
How to enable load-on-demand for the pivot grid tooltips.

RadTabStrip for ASP.NET AJAX
Show Loading Sign on Page View
How to show a loading sign while an external page in a RadMultiPage loads.

[Marin Bratanov]

RadDatePicker for ASP.NET AJAX
Min/Max Date validation and comparison between pickers
How to implement validation for two pickers (start and end) and show realtime messages to the users in case the standard validation messages do not suffice.

RadEditor for ASP.NET AJAX
Change Ribbonbar tabs of RadEditor toolbar on mouse hover
How-to article of how to switch the Ribbonbar tab items on mouse hover.

RadGantt for ASP.NET AJAX
Custom Task Tooltip
This example demonstrates how to show custom tooltips for the tasks.

RadGrid for ASP.NET AJAX
Preserve Custom Sorting on Paging, Filtering or Other Rebinding Action
Since RadGrid rebinds the data on Paging, Filtering, etc. as described in Commands that invoke Rebind Implicitly, custom sorting could be lost. There is a simple yet efficient approach to bind the data by using a condition which checks whether sorting was applied and then does the binding according to the sorting criteria.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Content Security Policy (CSP) and UI for ASP.NET AJAX Controls
This article explains how to configure the CSP header/meta tag so that it allows inline scripts and styles that are needed by the MS AJAX framework and by the Telerik controls.

RadGantt for ASP.NET AJAX
Create a Hyperlink column
This example demonstrates how to achieve a hyperlink column in RadGantt.

RadGrid for ASP.NET AJAX
How to update batch edit grids from outside button and also save external user input
How to save more than one batch edit grid with an external button and also handle other user input or common logic.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Different Render in Design Time and in Browser
Why the design-time rendering may not match the rendering in the browser and have differences in the size, color and/or font.

RadAjax for ASP.NET AJAX
Get more descriptive errors by disabling AJAX
How to disable AJAX temporarily

RadEditor for ASP.NET AJAX
Prevention of XSS attacks through DOM attributes
How to remove DOM attributes that can contain an XSS payload from the RadEditor content.

RadFileExplorer for ASP.NET AJAX
Security
A new article that shows a sample approach of securing user actions invoked through RadFileExplorer.

RadGrid for ASP.NET AJAX
How to change the Print Button Text of the grid
New KB for changing the Print Button Text of the grid

RadHtmlChart for ASP.NET AJAX
Add Gap Between Donut or Pie Chart Segments
This sample demonstrates one way to add uniform spacing between pie/donut chart segments, even though such a feature is not available in the chart control.

RadScheduler for ASP.NET AJAX
Scheduler client PDF export with ClientExportManager
This example demonstrates how to export the Scheduler to PDF on the client-side by using the ClientExportManager control.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Error: Web.config registration missing! The Telerik dialogs require a HttpHandler registration in the web.config file.
Updated: Added a new scenario with nested web.config files

RadGrid for ASP.NET AJAX
RadGrid with Batch Editing and Dynamic Group Aggregates Calculation
Demonstrates how to update the group totals when Batch cell value is changed.

RadMaskedTextBox for ASP.NET AJAX
Paste and Validate or Modify Content
How to validate and change pasted content before the masked textbox attempts to match it against the provided mask (for example, strip non-numeric characters from a phone number)

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Register Telerik HTTP handlers in nested web.config
How to register the Telerik handlers in a web.config that is not in the root level of the site.

RadAsyncUpload for ASP.NET AJAX
Change AllowedFileExtensions and Check Uploaded Files
How to invalidate and remove files that have the wrong extensions after you change the allowed file extensions.

Dynamically change the PostbackTriggers collection of the AsyncUpload
Change the PostbackTriggers collection dynamically. For example, when the validation on the server passes, the control that fired the postback should become a PostbackTrigger for the AsyncUpload

RadDataPager for ASP.NET AJAX
SEO Paging Overview
Added information on how SEO paging works, how the URL changes and what requests are invoked.

Page size is not changed to 10
A KB explaining a behavior related to changing the default page size with SEO paging

RadEditor for ASP.NET AJAX
Pasting Content Overview
Added information on IE11 limitations in handling pasting.

RadGrid for ASP.NET AJAX
Prevent numeric value changing with Batch editing when using keyboard navigation with the arrow keys
GridNumericColumn generates RadNumericTextBox in Batch editing which may lead to auto incrementing.

RadGrid appends 1 to the unique names of auto generated columns
The UniqueNames of the AutoGeneratedColumns may have 1 appended at their end.

Get file path to the uploaded file using Async Upload inside RadGrid
Code library demonstrating how to get file path to the uploaded file using Async Upload inside RadGrid.

RadImageEditor for ASP.NET AJAX
How to Initially Zoom the Loaded Image to Best Fit
Zoom the image loaded in RadImageEditor to best fit the editable area of the control. on initial load.

RadNavigation for ASP.NET AJAX
NodeDataBound
Added examples how to access the DataItem of the node.

RadPivotGrid for ASP.NET AJAX
Filter List Missing Values With Large Amount of Data
The possible values in the filter window is limited and do not include (load) the entire list of all items available from the data source.

RadScheduler for ASP.NET AJAX
RadSchedulerRecurrenceEditor does not persist the Selected month in YearView
In YearView of the RecurrenceEditor, when you postback the page, the dropdowns for selecting the month change their value back to the default value (January).

RadSpreadsheet for ASP.NET AJAX
Access the Spreadsheet workbook on the server
How to access the Spreadsheet workbook on the server when pressing the Save button in the Spreadsheet or calling programmatically the .save() client-side method.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Official support for .NET 4.7
The pages https://www.telerik.com/aspnet-ajax/tech-sheets/net-support and https://www.telerik.com/aspnet-ajax/tech-sheets/system-requirements have been updated with information about the officially intoroduced support for .NET 4.7 since version R2 2017 SP2 (version 2017.2.503).

RadAsyncUpload for ASP.NET AJAX
Add an image to the AsyncUpload button
The KB article demonstrates how to customize the Select button of RadAsyncUpload and add an image to it.

RadGrid for ASP.NET AJAX
Multi Selection with Three-state Checkbox in the Header
This sample demonstrates how you can embed a tri-state checkbox inside the header cell of a GridClientSelectColumn.

Show progress bar on Submit using AsyncUpload within RadGrid
A sample project to demonstrate manual upload operation using RadAsyncUpload implemented in RadGrid. Select the desired files, and start the upload on button Click. There are two scenarios in this sample, those are uploading all asynchronously and uploading one after the other.

RadHtmlChart for ASP.NET AJAX
Truncate Labels (set Max Length)
How to limit the length of various strings in the chart.

Pie Chart Labels are Cut Off or Truncated
What to do if the labels of the chart get truncated or cut off.

RadNavigation for ASP.NET AJAX
How to select node programmatically
A recursive approach that shows how to select a node and expand to it.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Installing the Telerik Controls from a NuGet Package
Information on a nuget.exe upgrade that may require you to upgrade your NuGet Package Manager if you get errors.

Different appearance in Internet Explorer on local and production servers
In Internet Explorer, Telerik ASP.NET AJAX controls may have different appearance in development (local) and production environments.

Performance issues and high CPU utilization on the server caused by RadStyleSheetManager or RadScriptManager
This article describes server performance issues and slowdown caused by RadScriptManager or RadStyleSheetManager, usually increasing CPU load that may even max it out.

RadAsyncUpload for ASP.NET AJAX
How to filter (limit) file selection in the upload dialog
This article shows how to define what file types the end user can see when choosing a file for upload.

RadAutoCompleteBox for ASP.NET AJAX
Highlight matching text in filtered items of RadAutoCompleteBox
This example demonstrates how the string in the item's text that matches the filter string can be highlighted. A similar functionality is observed in the RadComboBox.

RadButton for ASP.NET AJAX
Changing the background, text and border colors of RadButton
How to change the background, text and border colors of RadButton on the client with JavaScript.

Reset RadioButtonList state
The article shows how to deselect RadRadioButtonList with server or client-side code.

RadEditor for ASP.NET AJAX
Inserting a Video Tag via the Media Manager instead of the default Object/Embed ones
Solution which overrides the default way for embedding videos by using videos tags, thus avoiding browser related issues.

RadGrid for ASP.NET AJAX
Set full RadGrid height depending on row count
The KB shows how to set full height to RadGrid

Reduce cell width of RadGrid range filtering
Reduce cell width of RadGrid range filtering

Change keyboard navigation commands in RadGrid with Batch editing
Change keyboard navigation commands in RadGrid with Batch editing

How To add document Header and Footer to exported excel file (format Xlsx)
This KB demonstrates How To add document header and/or footer to exported file when exporting RadGrid into excel format XLSX by using the telerik Document Processing Library, precisely RadSpreadProcessing.

RadMenu for ASP.NET AJAX
Select (highlight) the current page in the Menu
When the client navigates to a page, if there is an item with NavigateUrl equal to the path in the address bar, it should be highlighted.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Incorrect positioning of controls
Added an example at the end that shows a generic solution that may save you positioning and scrolling issues, especially with Chrome 61+ that introduced a breaking change in scrolling calculations.

Wrong placement of RadContextMenu and RadTooltip in Chrome 61
Added an update on avoiding the problem altogether, as it may arise in many places and many controls (tooltip, window, loading panel, menu, context menu, dropdowns, etc.)

Access Telerik Controls on Client-Side
How to access Telerik controls in template or content page scenarios

RadAjaxLoadingPanel for ASP.NET AJAX
Modal
RadAjaxLoadingPanel can be modal and cover the entire viewport.

RadGrid for ASP.NET AJAX
How to get UniqueName of RadGrid column from controls inside
How to traverse the DOM and get information from the grid control. You can use that to perform instant inline editing.

Add Shift+F10 Context Menu Navigation for RadGrid
This sample demonstrates how you can override the default Shift+F10 keyboard shortcut combination of the browser and display the grid's own custom RadContextMenu instead.

Export HTML content into Docx
Code sample that demonstrates exporting RadGrid containing Html data into Word Format Docx by utilising the Telerik Document Processing Library.

Make "Check All" to include only displayed list options in Excel-like filtering
Clicking on "Check All" checkbox will check only displayed items when CheckList Filtering is enabled.

Show one value but edit another
How to show one value to the user but edit another in the Batch Edit mode.

Changing RadGrid Column Header Text when Sorting is Enabled
Change header text without breaking sorting

Working With Templates in Batch Edit Mode
Improved explanations on how to implement complex logic in template columns with batch editing.

Batch Editing Server-side API
Added information on the keys used to access changes

RadListView for ASP.NET AJAX
How to set height to RadListView and make it responsive
How to define a layout in RadListView so you can set height, width, scrolling and other appearance settings for the listview.

RadScheduler for ASP.NET AJAX
Resizing Appointment Causes Height Increase
Using custom border styles on an appointment may cause resizing issues with the UI.

RadTreeList for ASP.NET AJAX
Open RadTreeList Items in Edit Mode with Double Click
Use double click action to open items in edit mode

[Marin Bratanov]

RadComboBox for ASP.NET AJAX
How to select first item on blur
If you want to ensure there is input after the user filters or opens a combo box, you can use its API to select an item.

RadEditor for ASP.NET AJAX
How to keep focus on the activated tool in the toolbar
When the user navigates the toolbar with the keyboard and activates a tool, focus moves to the content area. This article shows how you can keep the focus in the toolbar.

RadGrid for ASP.NET AJAX
Hide column data but keep aggregate data in the footer
If you want to keep the footer aggregates but want to remove the item data from a certain column.

Reordering Columns
Added info on the expected order indexes and how to get the user action.

How to set RadGrid Excel Like Filtering pop-up menu width
The Excel-like filtering does not have a provision for resizing, but you can use a CSS hack to make it wider so you can see longer text messages in case the filtering option does not suffice.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Installing the Telerik Controls from a NuGet Package
Information on a nuget.exe upgrade that may require you to upgrade your NuGet Package Manager if you get errors.

Error Creating Control Failed To Create Designer after upgrade to R1 2018
An error that may be caused by automated upgrades and its solution.

RadCheckBox for ASP.NET AJAX
Selected Item in RadCheckBoxList
Added information and example on how to get or set selected items in RadCheckBoxList

RadGrid for ASP.NET AJAX
Access data from parent tables
An example added that shows how to access data from parent tables in DetailTable scenario (see the green Tip section).

Retrieve filtered data from RadClientDataSource using RadGrid's event
This sample describes the way to access the filtered results instead of the entire data when RadGrid is bound to RadClientDataSource. It could also be a viable workaround for the issue reported as Grid with RadClientDataSource sends two requests when navigating with Grid pager.

[Marin Bratanov]

RadEditor for ASP.NET AJAX
Prevent Cross-site Scripting (XSS)
Added information which built-in anti-XSS filters in RadEditor are enabled by default.

Error: Web.config registration missing! The Telerik dialogs require a HttpHandler registration in the web.config file.
The article has been updated with information about Friendly URLs and a "See Also" section.

RadImageGallery for ASP.NET AJAX
Specify order when loading images in RadImageGallery
The article provides guidance of how to change the default order of images in RadImageGallery.

RadMenu for ASP.NET AJAX
How to hide menu items when the user does not have permissions to see them
how to hide menu items when user has no permissions to see them.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Errors when Page Async="true" for the async-await pattern
The async-await pattern for WebForms can cause errors and is not supported.

Disable Auto Complete in Chrome for Input elements, RadTextBox and RadComboBox
Learn how to stop the autofill / autocomplete feature of Chrome

RadAutoCompleteBox for ASP.NET AJAX
DataSource not set error thrown when data source is provided in ItemDataBound
How to resolve the DataSource not set error when the autocomplete is in a data bound control like a repeater or grid

RadGrid for ASP.NET AJAX
Horizontal scroll speed is slow with static headers
Clicking the scrollbar may cause slow/unexpected scrolling behavior when static headers are enabled.

Two tooltips for header cell when column resizing is enabled
How to avoid the second browser tooltip that you may get when tooltipifying a grid header.

RadListView for ASP.NET AJAX
Item drag and drop with client data binding
How you can use client binding with drag-and-drop

Drag and Drop
Added information that item drag and drop is supported only with server-side data binding.

[Marin Bratanov]

RadGrid for ASP.NET AJAX
Place the RadGrid Excel-like filter inside a submenu
Cample code that demonstrates how to place the Excel-like filter inside a submenu, thus will help reducing the size of the HeaderContextMenu.


RadWizard for ASP.NET AJAX
RadWizardStep client API
Added list of the methods that the wizard step exposes.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Fix incorrect appearance in Telerik controls when using Bootstrap library
Telerik controls may have wrong appearance when the Bootstrap library is loaded on the page.

RadCalendar for ASP.NET AJAX
OnDateSelecting
A new example that shows how you can use it to perform client-side validation of the selected date.

RadGrid for ASP.NET AJAX
Extracting values from grid items
Added information for template columns

Adding a delete confirmation
Updated custom confirm example for Lightweight RenderMode

Apply culture specific format to a Numeric Column
Sample code demonstrating how to apply different culturual Numbering format to GridNumericColumn without changing the culture of RadGrid or the Page itself.

Master/Detail RadGrids with Programmatic Binding
This sample demonstrates how you can have related Master and Detail grids and update the detail grid based on the selection of the main grid.

Different Controls in the Top and Bottom CommandItem of RadGrid
This sample demonstrates how you can use the CommandItemTemplate to have two sets of different controls in the top and in the bottom command item.

RadListView for ASP.NET AJAX
Error with client side binding and AJAX postback
An error you may get when disposing a listview bound on the client in a partial postback.

[Marin Bratanov]

RadDropDownTree for ASP.NET AJAX
Show children with different text than the filter
How to filter nodes by text that is not present in their text field.

RadEditor for ASP.NET AJAX
Disable Grammarly in RadEditor
Learn how to disable the popular browser plug-in to prevent side effects with the selection and generation of junk content in RadEditor.

RadGrid for ASP.NET AJAX
Misaligned Columns in RadGrid with Scrolling Enabled
In some scrolling cases you can observe misaligned columns and headers, usually when using Internet Explorer.

RadGrid Export to Pdf & Excel Image Header
Code Library sample that demonstrates Exporting RadGrid with an Image as Header for both PDF and Excel.

RadSpreadsheet for ASP.NET AJAX
Spreadsheet client-side import file from server and save client-side exported file on server
The following project shows how you can use the client-side import of the RadSpreadsheet to load a file from the server and how to save on the server the file created from the client-side export functionality. This approach can be used to overcome some issues or limitations of the Server-side import/export of the RadSpreadsheet which are not present in the client-side import/export.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Browser Detection API
A new article describing a new set of client-side flags that you can use for browser and feature detection.

Telerik Static Client Library
Added link to better browser detection API as the flags listed on this page are old.

RadButton for ASP.NET AJAX
Fix misalignment issue with RadRadioButtonList
You may experience an issue with misaligned list elements. The article will show you how to deal with it.

RadScheduler for ASP.NET AJAX
Highlight all appointments with the same attributes as the hovered one
This example demonstrates how to add a box-shadow of all appointments that have the same attribute as the currently hovered appointment.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
How to fix License File related errors
Learn how to identify the License File related errors and how to solve them.

RadAsyncUpload for ASP.NET AJAX
Access selected file in the arguments of OnClientFileSelected event of AsyncUpload
Having the files available in the arguments of the event could be useful when the file is needed for some processing on the client before uploading.

RadDropDownList for ASP.NET AJAX
Add Accessing client changes at the server article
An article explaining how to access the changes to the items made on the client-side.

Update RadDropDownList client-side object API article
Added some missing methods and examples.

RadEditor for ASP.NET AJAX
Cancel Enter key execution in the content area
Learn how to cancel the Enter key execution in the content area of RadEditor

RadGrid for ASP.NET AJAX
How to get deletee notification in batch editing mode
The user needs to see that they deleted a row and must press Save Changes first. By default the row disappears and this can be changed with a single property.

Xlsx and Docx export limitation
Added a limitation pertaining to a specific use case of custom skins.

Biff export limitation
Added a limitation pertaining to a specific use case of custom skins.

RadScheduler for ASP.NET AJAX
Highlight all appointments with the same attributes as the hovered one
This example demonstrates how to add a box-shadow of all appointments that have the same attribute as the currently hovered appointment.

Implementing a Custom Scheduler Provider That Supports Multi-Valued Resources
Implementing a Custom Scheduler Provider That Supports Multi-Valued Resources following the steps from https://docs.telerik.com/devtools/aspnet-ajax/controls/scheduler/data-binding/providers/implementing-a-provider-that-supports-multi-valued-resources

RadStyleSheetManager for ASP.NET AJAX
Serving External Style Sheets
Added example how to access the RadStyleSheetManager control from a content page or user control so you can dynamically add stylesheets

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
How to Manipulate the Uploaded Files
Added information on troubleshooting issues related to TargetFolder usage

RadDataForm for ASP.NET AJAX
DataForm Object
Added information on controlling the Insert Item Template rendering position.

RadEditor for ASP.NET AJAX
Disable Drag and Drop of internal and external elements and text in RadEditor
Learn how to disable Drag and Drop of internal and external elements and text in RadEditor

RadFileExplorer for ASP.NET AJAX
Drag and Drop Files
This article explains the drag-and-drop features in RadFileExplorer

RadGrid for ASP.NET AJAX
How to bind RadGrid properly on server-side
Important tips for binding the grid properly

RadHtmlChart for ASP.NET AJAX
Displaying Grand Total In Stacked Series Labels And Pie Series Legend
Shows how you can use the stackValue property in a label of a stackable series to do this.

Shared Template for ToolTips
Added example how to get a total in the tooltip.

RadMap for ASP.NET AJAX
Move or Create a Map marker at the clicked location
This article shows how to move a marker or create a new one at the position on the map where you clicked.

RadNavigation for ASP.NET AJAX
Expand and collapse delay on hover in RadNavigation
This project implements the ExpandDelay and CollapseDelay functionality based on the Navigation - Expand On Hover demo and behaves similarly to the RadMenu.

RadOrgChart for ASP.NET AJAX
OrgChart export to PDF connecting lines correctly with ClientExportManager
The connecting lines of the Lightweight OrgChart are rendered as styled :before and :after pseudo-elements. Due to the different rendering of the pseudo-element in the various browsers, the connecting lines are not exported in the PDF file.

RadScheduler for ASP.NET AJAX
Custom date format in Scheduler with Agenda View
The Agenda View does not support built-in removing of the end time of an appointment and using a custom format. Nevertheless, this project demonstrates how the HTML elements containing the dates can be modified as per the project requirements.

Scheduler bound to a List using the DataSource property
This project demonstrates how to bind a Scheduler and its Resources to a List by following the steps in Using the Data Source Property article.

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Non-negative number required. Parameter name: length from Telerik.Web.UI.Upload.RequestParser.GetFieldBytes()
Sometimes a "Non-negative number required. Parameter name: length" error is thrown when the Obsolete RadUpload handlers are registered in the web.config file.

RadFileExplorer for ASP.NET AJAX
How to know, in ItemCommand, if the user checked the Overwrite if file exists? checkbox
An article that shows how to get the user choice in ItemCommand before it reaches the provider.

RadGrid for ASP.NET AJAX
Header Context Menu
Added examples how to set a custom CSS class on the header context menu.

[Marin Bratanov]

RadEditor for ASP.NET AJAX
Disable the Embedded jQuery in RadEditor dialogs
The article shows how to disable the Embedded jQuery in RadEditor dialogs and guides you how to add your own version of the popular JavaScript library to them.

RadGrid for ASP.NET AJAX
How to set Excel export cell format
Setting the Excel cell format can prevent formatting issues like long numbers or data that Excel refuses/wants to parse. This provides the developer with control over the presentation of the excel export.

How to remove the filter row from Excel export
This article shows how you can remove the blank filter row from the Excel export. It also lets you remove content form custom FilterTemplates as well.

RadNotification for ASP.NET AJAX
How to create UI for EU Cookie Consent
This is an example that shows the base for implementing a popup for cookie consent.

RadSpreadsheet for ASP.NET AJAX
Expected op «,» but found punc «;» error when loading Excel file in Spreadsheet
Expected op «,» but found punc «;» error is thrown in the console when loading an Excel file in Spreadsheet.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Programmatic creation of RadScriptManager causes issues with RadAjaxManager
Creating programmatically the script manager may cause the ajax manager settings to not work. Here is the solution.

Automatic Custom Skin Registration
This section was improved to list the full requirements, behavior and limitations of the automatic custom skin registration feature of RadSkinManager.

RadGrid for ASP.NET AJAX
Drag and Drop of Grid Items
Added information on automatic scrolling

How to create custom aggregate functions
A new example showing the details and API you can use to create custom aggregate functions with RadGrid if the built-in ones that work with numbers do not suffice for your case.

[Marin Bratanov]

RadChat for UI for ASP.NET AJAX
Documentation
The documentation for the new Chat control.
Demos
The demos for the new Chat control.

Progress® Telerik® UI for ASP.NET AJAX
How to encrypt the Telerik appSettings keys
This KB article summarizes information scattered on the Internet that shows how you can encrypt portions of the web.config so sensitive data like keys and paths is more secure than when stored in plain text.

RadClientExportManager for ASP.NET AJAX
Known Limitations
Updated the list with vertical text

Exporting Special Characters
Improved readability and added examples that can reduce the code you need to change

RadGrid for ASP.NET AJAX
Batch Editing Server-side API
Improved examples of handling server-side events

Print
Added troubleshooting information for the built-in printing feature of the grid - link to a workaround for Chrome and information on exporting special characters

RadHtmlChart for ASP.NET AJAX
Common Issues
A new section on how client events and tooltips can stop working if you move the chart in the DOM

RadMap for ASP.NET AJAX
How to show current location on map
Updated the article the shows how to modify markers dynamically to explain the objects you need to use and added an example at the end that uses the current position for a marker.

RadNotification for ASP.NET AJAX
Embedded Icons
Added information that the built-in icons are only available when the Text is used.

Populate Static Content
Add information how to create the control entirely in the code-behind and use rich content.

RadNumericTextBox for ASP.NET AJAX
Change NumericTextBox number format dynamically
Update displayed text after changing some number format options.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Unhandled exception in Telerik.Web.UI.WebResource
How to deal with a JavaScript unhandled exception seemingly coming from the Telerik web resource handler.

RadButton for ASP.NET AJAX
A potentially dangerous Request.Form value was detected from the client in IE when RadButton is on the page
An error thrown in IE and how to avoid it.

RadHtmlChart for ASP.NET AJAX
How to Show RadHtmlChart with Animation on a Click Event
Showing a RadHtmlChart on a button click with animations.

RadHtmlChart with DateTime Axis Loads Slowly
RadHtmlChart with a DateTime Axis loads slowly or causes the borwser to hang

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Cannot scroll Telerik control in iOS 11.3 - the page scrolls instead
In a long page when you scroll a Telerik control which has a scrolling container (for example ComboBox, DropDownList or Grid with enabled scrolling) the page itself is scrolled along the control's scrolling container.

RadButton for ASP.NET AJAX
Reset RadioButtonList state
Updated client-side example to show how to carry over the information that no items are selected to the server.

RadEditor for ASP.NET AJAX
Paste at the Cursor Position
Added info on how to handle additional events like keyup to provide smoother experience.

RadGrid for ASP.NET AJAX
How to localize filter menu options and change header context menu height
Such features are not directly exposed and so you must access the controls whose texts you want to change. This example shows how you can get context menu items and even localize them on a per-column basis.

ClientDataSource binding: after filtering so no records are present and removing the filter there is no pager
The pager can go missing after removing filters in a client bound grid, and here's how to fix that.

RadGrid for ASP.NET AJAX
How to have different text in the GroupFooters and the GridFooter
A KB on having different text for the GroupFooter vs GirdFooter

RadListBox for ASP.NET AJAX
Selection is made when dragging an item
An item in the listbox will be selected when dragged and this may cause double AJAX postbacks.

RadScheduler for ASP.NET AJAX
Scheduler resources not working with some Resource names
Scheduler Resources are not working when their name is a reserved field or property. For example, a resource with name "Reminder" will not work but "ReminderResource" will.

RadSpell for ASP.NET AJAX
How to combine save and spell check
When the user clicks Save you can have them go though a spell check and then submit the form.

RadToolTip for ASP.NET AJAX
RadToolTip for RadComboBox
Added explanations how to handle load-on-demand scenarios

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Reverse Proxy (ARR) and Script Resource Issues
Some ideas on resolving a reverse proxy scenario that renders the Telerik controls broken.

RadClientDataSource for ASP.NET AJAX
Add authentication request headers with ClientDataSource
This article shows how you can add custom headers to the requests made from the ClientDataSource, for example, Authentication header.

RadEditor for ASP.NET AJAX
How to sanitize Markdown content
This article shows how to implement content sanitization before importing Markdown into RadEditor

RadGrid for ASP.NET AJAX
Grid bound to WCF web service via ClientDataSource
This example is isolated from the Grid - Basic Filtering demo, the client-side filtering Grid which is bound to a WCF web service via the ClientDataSource.

Visually indicate filtered columns in RadGrid with Excel-Like Filtering
Code Library sample describing how to configure RadGrid with Excel-Like filtering to visually indicate columns that have filters applied.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
RadChat real-time live cross-browser chat via SignalR
This example demonstrates how to configure the RadChat component for a real-time chat by using the SignalR technology.

Error: The type or namespace 'ScriptManager' does not exist in the namespace 'System.Web.UI'
Learn how to resolve the generic error: The type or namespace 'ScriptManager' does not exist in the namespace 'System.Web.UI'

RadGrid for ASP.NET AJAX
Horizontal scroll speed is slow with static headers
Added a JavaScript workaround provided by one of our customers.

Expand one item at a time in RadGrid with HierarchyLoadMode set to Client
Code Library sample describing how to expand one item at a time in RadGrid when the HierarchyLoadMode property is set to Client.

How to show a loading sign for excel-like filtering in RadGrid
How to put a spinner on the excel-like filter checklist instead of the blank space.

RadHtmlChart for ASP.NET AJAX
Cross disappears on hover
The Cross marker type can become invisible when hovered due to the default white highlight on white background. This article explains how to solve this.

RadRotator for ASP.NET AJAX
Setting RadRotator's size in percent
Added link to the article treating the built-in support for width in percentage.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Highlight text inside HTML elements and templates with RegEx
Highlight text inside HTML elements and templates using Regular Expressions. The example in the article shows how to highlight text in TreeView nodes with templates.

RadGrid for ASP.NET AJAX
How To prevent columns from being hidden via the HeaderContextMenu
How do I prevent certain columns from appearing in the HeaderContextMenu? I don't want some columns to be able to be hidden.

How to prevent UP/DOWN keys from changing values in a GridNumericColumn editor
Using an External Column Editor, additional settings can be configured for the GridNumericColumn

RadLightBox for ASP.NET AJAX
Templates
Added information on how templates work with postbacks and what behavior to expect.

RadScheduler for ASP.NET AJAX
Edit scheduler appointment with double tap
How to Edit a scheduler appointment with double tap.

RadWindow for ASP.NET AJAX
How to Change the Dialog Templates
It is important to note that you can only use plain HTML and no server controls in the predefined templates (RadAlert, RadConfirm, RadPrompt)

[Marin Bratanov]

RadEditor for ASP.NET AJAX
AjaxSpellCheck Object
Added example of how to reference the spell check object and how to invoke a spell check before saving the content.

Shift focus from RadEditor content area to its parent on Escape key press
The solution shows how to programmatically focus elements on the page by charing an useful tip of using the tabIndex attribute.

RadGrid for ASP.NET AJAX
We found a problem with this formula when exporting to Xlsx
How to deal with the We found a problem with this formula error when exporting to Excel

RadPageLayout for ASP.NET AJAX
RadPageLayout throws IndexOutOfBounds exception when iterating over LayoutRowCollection
Preventing an IndexOutOfBound exception when iterating over the Row/Column collection

RadTreeList for ASP.NET AJAX
How to export template columns
This article explains how you can deal with complex content when exporting TreeList data to Excel so you can avoid errors and modify the output to match your needs.

RadWindow for ASP.NET AJAX
Fluid or Adaptive Design with RadWindow
This article shows how to make a responsive (adaptive) RadWindow that reacts to the small size of a mobile device so it is more comfortable for the user to interact with.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
License Agreement
Added local installation locations for EULA and BOM.

RadDiagram for ASP.NET AJAX
How to pan with the mouse only
Show how to pan the Telerik diagram without pressing Ctrl from the keyboard, only by dragging with the mouse.

RadToolTip for ASP.NET AJAX
Export from Tooltip
This article shows different approaches you can take when you need to send a file from a tooltip or export content from it.

[Marin Bratanov]

Getting Started with Progress® Telerik® UI for ASP.NET AJAX
First Steps with UI for ASP.NET AJAX
A Getting Started article to help you setup quickly.

Explore Control Features
An article that explains how you can take a look at the features a control offers so you can get familiar with it.

Customize Control Behavior
An overview of how to find resources in order to implement your business logic with our controls.

Change Control Appearance
The basics of modifying the way a control looks.

Next Steps
Learning resources and next steps after getting familiar with the basics.

Progress® Telerik® UI for ASP.NET AJAX

Import and Export SQL database to *.sql script via SQL Management Studio
This article will show you how to export a Database to a *.sql script and the how to import it from such kind of scripts.

RadFormDecorator for ASP.NET AJAX
Integration With RadControls
Added detailed information on how styling a RadInput control works.

RadGrid for ASP.NET AJAX
Creating a RadGrid Programmatically
Added an example of attaching event handlers for the RadGrid that is created on Page_Load.

RadSpreadsheet for ASP.NET AJAX
Overview
Updated the list of supported file types to include csv, txt, json

Improve performance of slowly loading Spreadsheet
Loading a large amount of data in the Spreadsheet might result in a slow page loading.

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
WebSeal SSO breaks file uploads
WebSeal SSO can prevent RadAsyncUpload from sending files to the server and this article explains what happens and how to avoid it.

RadListView for ASP.NET AJAX
Change DataGroups Dynamically
This example shows how you can change the DataGroups collection dynamically on the server in response to user actions, much like you can do with the grid.

RadNavigation for ASP.NET AJAX
Server Templates
Added information that templates invalidate the NavigateUrl.

Templates Overview
Added information that templates invalidate the NavigateUrl.

RadScheduler for ASP.NET AJAX
Colorize rows by resource in Agenda view
How to colorize appointment rows in Agenda View

[Marin Bratanov]

RadComboBox for ASP.NET AJAX
Chosen value changes after postback with Material skin
Describes a peculiar issue where under Edge when the Material skin is used, the user selection in the combo box may be lost.

RadGrid for ASP.NET AJAX
Batch Editing Validation
Added examples and explanations of how MaxLength/MaxValue validation works with batch editing.

Pre-populate insert item with batch edit
An example that shows how you can preset data in the inserted item of a batch editing grid

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
jQuery Troubleshooting
A single-line solution to avoid jQuery and validation issues was added - disable Unobtrusive Validation.

RadAsyncUpload for ASP.NET AJAX
Preview uploaded image with RadAsyncUpload
Preview the image file selected for upload with RadAsyncUpload.

RadCaptcha for ASP.NET AJAX
High CPU Usage with RadCaptcha Audio Code
Describes an environment where the captcha audio causes performance issues and shows how to alleviate them.

RadGrid for ASP.NET AJAX
Hierarchy load modes
Updated the documentation, to include example code snippets and help avoid confusions.

Add buttons to RadGrid CommandItem when using Mobile RenderMode
When using RenderMode Mobile, RadGrid was designed to only render the following buttons in its CommandItem: Add New Records, Save/Cancel (when EditMode="Batch"), finally the buttons for for all export types. The aim is to reduce the number of controls for mobile devices. Nevertheless, it is possible to customize the CommandItem and add more buttons to it as needed.

Remove Group Separator From GridNumericColumn Editor
A example demonstrating how to remove group separators from the GridNumericColumn's editor.

[Marin Bratanov]

RadEditor for ASP.NET AJAX
After hitting enter the first line moves down in Chrome
The article shows how to solve a newly appeared problem in Chrome related to the Enter key behavior which applies margin to first paragraph in the content area of RadEditor.

Insert images with a base64 string in the src via the Image Manager
The article demonstrates how to insert images with a base64 string in the src instead of the traditional URL path via the Image Manager

RadGantt for ASP.NET AJAX
Custom Tasks Fields
Added information on using the autogenerated property accessors for the custom fields.

RadNumericTextBox for ASP.NET AJAX
Value is null after changing number format
Explains a server problem that can arise from tampering with client properties in the numeric text box and result in loss of the value

RadTreeList for ASP.NET AJAX
Client-side Object
Added the client-side command name for invoking a rebind ("RebindTreeList"), as it is different than the usual "Rebind".

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Problem in IE, works fine in other browsers
What to do if an issue happens only under IE.

RadComboBox for ASP.NET AJAX
Cascading RadComboBoxes with Checkbox Selection
An example showing how to implement cascading RadComboBoxes with checkbox selection.

RadSpreadsheet for ASP.NET AJAX
Show messages to user after response from saving the Spreadsheet
Show messages to the user when the response from the Save operation is returned.

[Marin Bratanov]

RadEditor for ASP.NET AJAX
Set default font for the content area and Font Name dropdown
The article explains how to configure the default font not only for the content area, but also for the Font Name dropdown and its header.

Keyboard Support Overview
Added information how to handle the CMD key on a Mac like Ctrl on Windows.

Using ToolsFile.xml
Added information how to handle the CMD key on a Mac like Ctrl on Windows.

RadSpreadsheet for ASP.NET AJAX
Full Screen Mode
An example that shows how to use the available browser API to put an element (in this case the RadSpreadsheet) in full screen mode so it occupies the entire monitor.

[Marin Bratanov]

RadClientExportManager for ASP.NET AJAX
Download Failed - Network Error when exporting a lot of data
You might experience a network Download Failed network error in Chrome when trying to export a large amount of data from the browser using the Client Export Manager. Check out the blog post to learn how to solve the problem.

RadComboBox for ASP.NET AJAX
RadComboBox ItemTemplate and Checkbox on different lines
ItemTemplate and CheckBox are on different lines.

RadDatePicker for ASP.NET AJAX
RadDatePicker binding to dates outside Min/Max range
Binding RadDatePicker to value outside Min/Max range.

RadGrid for ASP.NET AJAX
Display Group Name and Header Text in Columns Header Context Menu
Two examples of how to change the text of the header context menu items that show the column headers. This can help when you have multi-column headers so users can distinguish columns with matching header texts.

RadLabel for ASP.NET AJAX
Positioning the RequiredMark of RadLabel
An example describing how to position the RequiredMark of the RadLabel using CSS.

[Marin Bratanov]

RadBarcode for ASP.NET AJAX
QRCode
Explanations on how to control the size of the QR code were added.

RadComboBox for ASP.NET AJAX
Resize ComboBox input to show all of the selected item text
Resize the ComboBox element to show the whole selected item similar to the DropDownAutoWidth functionality.

RadEditor for ASP.NET AJAX
Begin typing without the styles from newly inserted formatting by the pasteHtml method to be applied to user input text
See how to manipulate the selection in the content area after executing the pasteHtml method.

RadGrid for ASP.NET AJAX
Google Like filtering for RadGrid
Isolated version of RadGrid Google-Like filtering

Setting 100% height and resize on container resize for grid with scrolling and static headers
Autoresize the grid to fit its parent container.

Page for client-side export
Shows how you can manipulate the DOM and put certain records of the grid on new pages when exporting to PDF on the client. Also shows how you can generate small reports on the client by disabling server paging.

RadHtmlChart for ASP.NET AJAX
Axes Configuration
Added the new Position property that controls where the axis labels will be rendered (available as of R3 2018).

[Marin Bratanov]

RadClientExportManager for ASP.NET AJAX
Known Limitations
Removed the limitation of exporting RadHtmlChart controls with page breaks, it was resolved in R3 2018.

RadGrid for ASP.NET AJAX
Migration from RadGrid for ASP.NET (Classic) to RadGrid for ASP.NET AJAX
The article will guide you through the process of upgrading RadGrid Classic to RadGrid for ASP.NET AJAX

RadHtmlChart for ASP.NET AJAX
Multiline Labels
Added information how escaping the new line sequence works in the server code.

RadHtmlChart cannot be bound to a data source that has special characters in its field names.
Improved information on what data source field names cannot be used.

Increase the Chart Plotted area to utilize the blank space
The article shows how to decrease the available empty space inside the plotted area.

RadImageGallery for ASP.NET AJAX
Keep Image Ratio on Browser Window Resize
Keeping the image ratio when resizing the browser window when you want to show a banner-like gallery on the top of the page.

RadScriptManager for ASP.NET AJAX
Combining External Scripts
Added information on caching.

RadSearchBox for ASP.NET AJAX
Ensure an item is selected when searching with SearchBox
Force item selection by preventing OnSearch event if there is no item selected.

RadSpreadsheet for ASP.NET AJAX
Load Excel file into a read-only Spreadsheet
Create a read-only Spreadsheet loaded from Excel file.

Server-side Programming
Added information when you can use the server-side Sheets collection of a RadSpreadsheet instance.

RadStyleSheetManager for ASP.NET AJAX
Serving External Style Sheets
Added information on cache busting.

[Marin Bratanov]

RadCloudUpload for ASP.NET AJAX
Azure Blob Storage
Updated information about the needed Azure assemblies versions and package versions.

RadComboBox for ASP.NET AJAX
Adding Images to Items
Added information how to control the alt attribute of the images the combo renders.

RadEditor for ASP.NET AJAX
Include both the HEX and RGB colors in the produced markup
See how to implement a custom content filter, which will make sure that the HEX and RGB color values are part of the produced content.

RadGrid for ASP.NET AJAX
Export DataRow from Selected Grid row to Excel on Button Click
This project shows how to: - Select a row in RadGrid; - Press an external button; - In the button click event get the DataRow from the selected row; - Export the DataRow of the selected row to an Excel file

RadMenu for ASP.NET AJAX
Using a stack of RadMenus vertically aligned
Code library showing how to apply CSS style for a stack of RadMenu's vertically aligned.

Update info and examples to show how to add items in RadMenu with Mobile render mode
var menu = $find("<%= RadMenu1.ClientID %>"); var menuItemClass = Telerik.Web.UI.RadMenuItem || Telerik.Web.UI.MobileMenuItem; var childItem = new menuItemClass(); childItem.set_text("New"); menu.get_items().add(childItem);

RadStyleSheetManager for ASP.NET AJAX
Known Limitations
Added information about unnecessary reloading of resources

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Disable the Compatibility View mode of Internet Explorer
Learn how to easily disable the compatibility mode of your Internet Explorer browser!

RadAutoCompleteBox for ASP.NET AJAX
Allow to select only one text item or a single token item in RadAutoCompleteBox
The AutoCompleteBox is designed to allow users to select many items. Nevertheless, the following approach will achieve the single selection functionality.

RadEditor for ASP.NET AJAX
Set focus to RadEditor body on click of Tab of previous control
The article demonstrates how to apply the tabIndex attribute over the content area and disable the InsertTab and InsertShiftTab shortcuts of the control.

Configure RadEditor Statistics Module to update on paste and key up
Shows how to override the built-in functionality of the Statistics module to work on key up and paste events.

RadGantt for ASP.NET AJAX
Create a custom Time Marker similar to the Current Time Marker in Gantt
Create a custom Time Marker similar to the Current Time Marker in the Gantt - Current Time Marker demo https://demos.telerik.com/aspnet-ajax/gantt/examples/functionality/currenttimemarker/defaultcs.aspx

RadSpreadsheet for ASP.NET AJAX
Open a RadWindow when clicking a link in a Spreadsheet cell
When clicking on a link in a cell, open the content in a RadWindow instead of navigating away.

[Marin Bratanov]

RadAjax for ASP.NET AJAX
Could not find an event named XYZ on associated control ABC for the trigger in Update Panel
Learn how to fix the popular error applicable for the RadAjaxManager and asp:UpdatePanel components.

RadDatePicker for ASP.NET AJAX
How to use Thailand Calendar in RadDatePicker
The Telerik calendar controls support only Gregorian calendars, yet this may be a workaround for some other calendars as well.

RadDiagram for ASP.NET AJAX
How to show all diagram items so they fit in the viewport
How to fit the entire diagram for display without worrying about its size.

Change Shape Visual Template Dynamically
See how to change the shape’s Visual Template dynamically (e.g. on a shape click).

RadEditor for ASP.NET AJAX
No FONT tags are applied when I type text in the editor
Yet another solution was provided for the case.

Hide RadEditor Tooltip when ContentAreaMode is Div
See how to remove the tooltip when hovering on the div content area of RadEditor.

RadGrid for ASP.NET AJAX
Select cells in RadGrid with Hierarchy
Code Library sample to demonstrate how to select cells in RadGrid and its DetailTables using client-side (JavaScript) logic.

Show or Hide Multi-Column RadGrid Headers on Client-Side
This sample demonstrates how to toggle the visibility state of entire ColumnGroups using client-side logic.

Adding a custom validator explicitly
These steps will guide you through the process of adding custom validator to GridBoundColumn.

RadHtmlChart for ASP.NET AJAX
Add Title to RadHtmlChart Legend
Useful in scenarios in which you need a title specific to the Series names listed in the RadHtmlChart Legend

RadListView for ASP.NET AJAX
Infinite Scrolling with RadListView
This sample demonstrates how you can achieve infinite scrolling with RadListView.

RadTreeList for ASP.NET AJAX
Aggregates
Aggregates are not supported with load-on-demand.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Use cookies to help execute custom JavaScript after a file starts to download
This article shows how to use cookies to simulate an event triggered when the file starts downloading.

RadAjax for ASP.NET AJAX
Placeholder is not updated by RadAjaxManager
How to use Placeholder controls in RadAjaxManager settings.

RadCalendar for ASP.NET AJAX
How to make the Today button to actually select the date
In order to enable the Today button to make an actual date selection, you can make avail of the EnableTodayButtonSelection property.

RadClientExportManager for ASP.NET AJAX
Known Limitations
Added information on page break limitations

Export Multiple Elements from the Page at Once
An example showing how to utilize deferreds and the Kendo Drawing API to put several disparate elements from the web page into a single exported PDF document (on separate pages).

RadComboBox for ASP.NET AJAX
How to select item with Load On Demand enabled
Accessing the items with load-on-demand may be tricky and the best place to get them in order to pre-select one is the OnClientItemsRequested event.

RadDeviceDetectionFramework for ASP.NET AJAX
RadDeviceDetectionFramework
Added information how the data is obtained and what may cause slight inaccuracies in some rare cases like iPhones.

RadDiagram for ASP.NET AJAX
Connection touches or crosses shape or connection
How to reduce the chance of connections crossing/touching a shape or connection.

RadDropDownList for ASP.NET AJAX
DropDownList with a free text field
How to allow free text in a dropdown option so you can carry it as Value of the dropdown to the server.

RadEditor for ASP.NET AJAX
Hide RadEditor Tooltip when ContentAreaMode is Div
See how to remove the tooltip when hovering on the div content area of RadEditor.

Unable to enter Percent % symbol with French keyboard in the Image Options dialog
See how to overcome the inability to enter percent sigh when typing in French in the Width and Height fields of the Image Options dialog.

Get the content area object of RadEditor with a single JS function regardless of the ContentAreaMode value
The article provides a common function for getting reference to the div or iframe content area of the control.

set_html() method
You should avoid calling set_html() when the editor is in preview mode to avoid errors.

RadGauge for ASP.NET AJAX
RadGauge with 'display: none' does not render properly
See how to fix the RadGauge dimensions after being initially hidden and shown on the page.

RadGrid for ASP.NET AJAX
Keep popup edit form next to edited item
How to keep the grid popup edit form right below the item that is being edited

RadGrid NestedViewTemplate Hierarchy with Programmatic Binding and Accessing Controls
This sample demonstrates the proper way of programmatic binding of RadGrid hierarchy with NestedViewTemplate and accessing controls which are residing inside the nested template.

Display Detail Table Total Aggregates in the Parent Item of RadGrid Hierarchy
This sample demonstrates a hierarchy grid with a calculated column in its master table, which displays the sum (or any other defined Aggregate as a matter of fact) of values in the detail tables.

Reset RadGrid state
When you want your grid to return to its clean and tidy initial state, you can clear its applied settings manually. 

CheckBoxes are not visible in RadGrid
You can try these suggestions to fix the appearance of the CheckBoxes.

Determine insert or edit mode in RadGrid with Batch editing
There are scenarios where it might be helpful to know whether the currently opened grid cell in Batch editing is from a new row or already existing one.

How to prevent ungrouping columns even from the group panel
You can prefer the grouping structure to remain unchanged and hence the user shouldn't be able to drag a field from the group panel to ungroup.

RadMap for ASP.NET AJAX
Customizing Markers in RadMap
Update article to include the new CSS class generated for custom markers as of R3 2018: k-i-marker-my-custom-shape

RadOrgChart for ASP.NET AJAX
OrgChart connecting lines are missing when browser is zoomed
When changing the zoom level of the browser, the connecting lines of the OrgChart are missing.

RadSpreadsheet for ASP.NET AJAX
Show messages to user after response from saving the Spreadsheet
Update article to show how to carry the message from the server via cookies

 

[Marin Bratanov]

RadAjax for ASP.NET AJAX
RadAjax and WebUserControls
Added example how to handle AjaxRequest server-side event in a user control. Improved overall readability and information quality.

RadEditor for ASP.NET AJAX
Enabling RadEditor in SharePoint
KB article with how-to videos for using RadEditor in SharePoint

RadGrid for ASP.NET AJAX
Validation
The grid does not have a default validation group, so if you set one for your validators (like those in a template column), make sure to set it to the grid as well. Also updated article to list default values.

RadListView for ASP.NET AJAX
Extracting values from a selected item
Added a note about the ExtractValues usage.

RadScheduler for ASP.NET AJAX
Configure TimelineView of RadScheduler to behave and appear as WeekView
By configuring the TimelineView similar to the WeekView, you can use it as a table with tasks for various days, without the hour rows of the WeekView.

Theme Builder for ASP.NET AJAX
Theme Builder for ASP.NET AJAX
General improvements on the guide.

RadToolBar for ASP.NET AJAX
RadToolbar is not responsive when placed inside CommandItemTemplate of Grid
Toolbar loses its responsiveness when placed inside the CommandItemTemplate of a responsive RadGrid. This article shows how to overcome this expected behavior.

RadTreeView for ASP.NET AJAX
TreeView ContextMenu not showing or immediately collapsing on mobile devices
When you long press a TreeView node, the context menu shows, but when you lift your finger, the node is selected and the context menu hides.

RadZipLibrary for ASP.NET AJAX
Download Multiple Files in a Single Archive with RadZipLibrary
This sample demonstrates how to download multiple files from various formats within a single .zip archive.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Page Transition Animation
When you click a menu or otherwise navigate to another page, you can show a loading sign for the user on both pages so they do not feel like they are leaving the current one, and you can avoid the blank/frozen screen.

RadAutoCompleteBox for ASP.NET AJAX
AutoCompleteBox to remain with open dropdown to allow multiselection
Configure the AutoCompleteBox imitate the behavior of the Kendo UI MultiSelect widget by allowing the selection of multiple items without closing the dropdown on item click.

RadDateTimePicker for ASP.NET AJAX
Prevent Time Getting Reset to 12:00 AM Midnight in RadDateTimePicker
It may happen that even when the user selects a time slot explicitly from the timeview pop-up, the time still to be set and remain at 12:00 AM.

Set Default Time to RadDateTimePicker
In order to set your own custom predefined time to be set automatically when a date is selected, you can use this approach.

RadDropDownTree for ASP.NET AJAX
Configure RadDropDownTree to open its dropdown upwards
Configure DropDownTree to open in an upward direction, to "Drop up".

RadEditor for ASP.NET AJAX
Empty Link error for Editor tools when validated with Wave
This article gives two possible solutions to the "Empty Link" errors for the tools in the Editor's toolbar when validated with WAVE.

RadGrid for ASP.NET AJAX
Column Resizing
Improved information on setting initial column size and how column size is determined.

Persist current PageIndex or stay with the first item after PageSize changed in RadGrid
By default RadGrid will jump to the first page when the PageSize is changing. Sometimes, you might want to persist the current PageIndex or stay on the same page with the first item of the current page after the PageSize is changed in RadGrid. This article will show you the way you can achieve that.

Set Focus to a Control in PopUp Edit Form of RadGrid
The PopUp is loaded after the grid and the focus should be set in a later stage.

Export grouped grid to CSV
CSV does not support grouping, so you can replace grouping with sorting or use the XLSX format.

Change the skin of built-in filter controls of RadGrid
Change the skin of built-in filter controls of RadGrid, so that they will look different from the grid.

Filter separate columns with OR logic; create custom filtering logic
This article shows how you can modify the built-in grid filtering logic to use your own through modyfing filter expressions or filtering the underlying data source.

[Rumen]

Progress® Telerik® UI for ASP.NET AJAX
How to Load Skins from External Assemblies
General Improvements on the documentation as well as added support for Lightweight RenderMode.

How to load skins from external assemblies
Custom Skins Assembly Solution including the Class Library and a Web Site used for the "How to Load Skins from External Assemblies" documentation article.

RadGrid for ASP.NET AJAX
Column Resizing
Improved information on setting initial column size and how column size is determined.

RadHtmlChart for ASP.NET AJAX
Gap and Spacing
Series can be overlapped as of R1 2019 by setting negative values to the Gap and/or Spacing properties.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Configuration Error related to MachineKey
If you get a strange error without much details that points to the machine key, it may be due to old encryption methods.

RadButton for ASP.NET AJAX
Animate hiding and showing of RadButton to fade out and fade in
If you want to add some animated effect to hiding the button to make it more pleasant to the eye, look no further than the approach below.

RadGrid for ASP.NET AJAX
Get SQL compliant FilterExpressions from RadGrid
Workaround to Get SQL compliant FilterExpressions from RadGrid

RadGrid Lazy Loading and Infinite Scroll
Code Library sample demonstrating Lazy Loading and Infinite Scroll for RadGrid

Use a ToolTip as a Feedback for Input Controls as a Validation Message
An example of using RadToolTipManager for creating a Tooltip that gives feedback about the input error.

Update all, individual or selected rows using RadGrid with InPlace edit mode
Sample project that uses InPlace EditMode (server-side data editing) to do bulk updates on grid items.

Implement the Built-in Command Item of Grid Batch Editing in a Template and Add Delete Button
This sample demonstrates how to you can simulate the built-in CommandItem of RadGrid when using Batch editing.

RadSpreadsheet for ASP.NET AJAX
Broken scroll and overflow appearance in Spreadsheet
When you load a file in the Spreadsheet, sometimes it has a broken appearance, it overflows and the scroll is not working.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Installing the Telerik Controls from a NuGet Package
New section: Available Telerik Nuget packages and the ddls in them

How to Use JavaScript Intellisense for the Telerik Controls
Added information how to use JavaScript intellisense in VS 2017

jQuery Intellisense
Added information how to use jQuery intellisense with VS 2017

RadDiagram for ASP.NET AJAX
Create Connection Points Programatically
Explains how to add intermediate connection points between the shapes in order to achieve specific layout.

RadDropDownTree for ASP.NET AJAX
Keyboard Support
Updated the information to explain the control behavior correctly.

RadGrid for ASP.NET AJAX
JavaScript error in IE when hovering header row with svg in it
A peculiar scenario where a HeaderTemplate in a grid that contains SVG can cause errors under IE.

RadMenu for ASP.NET AJAX
Apply ClickToOpen functionality for sub-items of RadMenu
Apply ClickToOpen functionality for child items.

RadPageLayout for ASP.NET AJAX
Overview
Added information about the required viewport meta tag without which browsers will ignore some CSS @media queries.

RadScheduler for ASP.NET AJAX
Apply custom HTML attributes to the Scheduler appointment
Apply custom HTML attributes to the HTML element generated by the appointment.

RadSpreadsheet for ASP.NET AJAX
Server-side export to Excel from RadSpreadsheet
Server-side export Spreadsheet to Excel using Document Processing.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Apply Client-side Logic to Initially Hidden Controls
Learn how to apply client-side logic (or a funtion override) to a control that is initially hidden.

RadAutoCompleteBox for ASP.NET AJAX
Show all records when focusing the input element of AutoCompleteBox
Show all records in AutoCompleteBox when the input is focused.

RadDiagram for ASP.NET AJAX
Change Connectors Collection Dynamically
Update the connectors collection when the Visual template of a shape is changed.

RadGantt for ASP.NET AJAX
Use CustomFields in Gantt with a simple CustomProvider
This article shows a simplified version of the Custom Tasks Field with a simple CustomProvider using Session instead of EntityFramework.

RadGantt with Simple CustomProvider using collections in Session
Create a Simple Custom Provider for RadGantt that uses a list of appointments saved in the Session.

RadGrid for ASP.NET AJAX
Stack responsive RadGrid columns on small screens
Make the Grid more responsive by stacking the columns on small screens.

Extend DateTimeColumn Filter Range
What to do when the date time column appears to not honor the min and max dates and only allows you to filter between the years 1900 and 2100

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
Resize images client-side with HTML5 before uploading with RadAsyncUpload
Resize images on client-side before uploading them with the RadAsyncUpload control.

RadGrid for ASP.NET AJAX
Setting Pager Template
Added example of handling page size change with a custom pager template.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
CSS Validation issues in Telerik UI for ASP.NET AJAX stylesheets
If CSS validation tools flag the Telerik stylesheets, the cause is necessary hacks or vendor prefixes and you can ignore that.

RadSpreadsheet for ASP.NET AJAX
Understanding Telerik AJAX and Document Processing Library Spreadsheet Workbook and Worksheets
The assemblies from the Telerik UI for ASP.NET AJAX(later referred as AJAX) suite and Document Processing Library(later referred as DPL) both have Workbook and Worksheet classes which are different and with different capabilities.

[Marin Bratanov]

RadAsyncUpload for ASP.NET AJAX
File Filtering
Updated article about filtering the Choose File dialog with the current state of affairs - most notably that the FileFilters property will not work in modern browsers.

RadDropDownList for ASP.NET AJAX
Change DropDownList Item Color and Background
How to Change DropDownList Item Color and Background since BackColor and ForeColor properties do not work. Answer - use CSS rules.

RadHtmlChart for ASP.NET AJAX
Server-side Programming
Added example of programmatic chart creation

RadInput for ASP.NET AJAX
Client-side Programming
Added examples of using the client API of RadTextBox.

RadProgressArea for ASP.NET AJAX
Progress Template
Added example for a custom template and the built-in Lightweight RenderMode template so you can use them as base.

RadRating for ASP.NET AJAX
Microdata and Structured Data
RadRating and microdata/structured data - RadRating does not generate it and it is out of its scope.

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
RadMultiColumnComboBox Documentation
Documentation for the new RadMultiColumnComboBox control

RadMultiColumnComboBox Demos
Demos for the new RadMultiColumnComboBox control.

Chat Toolbar Documentation
Documentation about the new Chat Toolbar feature

Chat Toolbar Demo
Demo for the new Chat Toolbar feature

RadCloudUpload for ASP.NET AJAX
Changes and Backward Compatibility
Added information on base64 encoding that is now used for non-ASCII characters in metadata as of R1 2019.

RadFilter for ASP.NET AJAX
Customizing the Menu
Updated the article to explain how to have only one item that acts as a default filter.

RadHtmlChart for ASP.NET AJAX
Gap and Spacing
Series can be overlapped as of R1 2019 by setting negative values to the Gap and/or Spacing properties.

Line Chart
Add information on the ability to remove the empty space around the chart (i.e., to have the chart start from the y-axis), by setting the new Justified property of the x-axis to true.

RadInput for ASP.NET AJAX
Value hidden behind spin buttons with right align
How to avoid having the value in a numeric textbox cut off by right-align or RTL.

[Marin Bratanov]

RadMultiColumnComboBox for ASP.NET AJAX
Bind MultiColumnComboBox to EntityDataSource
This project shows how to easily bind the RadMultiColumnComboBox to an EntityDataSource.

Known Issues in RadMultiColumnComboBox
This article lists the known issues in the RadMultiColumnComboBox control

RadDropDownList for ASP.NET AJAX
Grouping DropDownList items
Grouping of DropDownList similar to RadComboBox - https://docs.telerik.com/devtools/aspnet-ajax/controls/combobox/how-to/grouping-items

RadSpreadsheet for ASP.NET AJAX
How to iterate all cells and rows in Spreadsheet properly
This article explains how to use the Index property of Cells and Rows so that you know their correct location in a sheet

[Marin Bratanov]

Progress® Telerik® UI for ASP.NET AJAX
Integration with Kendo UI Widgets
Updated list of the controls that are wrappers over Kendo UI for jQuery widgets.

Disable Auto Complete in Chrome for Input elements, RadTextBox and RadComboBox
Updated the article to reflect the new support of autocomplete attribute of Chrome v71 update

RadButton for ASP.NET AJAX
Fix Missaligned RadioButtonList icons when item is too long
When the RadioButtonListItem's text is longer than the listbox' width, the radio button icon is on a separate row.

RadComboBox for ASP.NET AJAX
ComboBox Filtering with Diacritic Accents
You can choose to enable accent-insensitive filtering for the RadComboBox component.

Add example for client-side disable/enable of RadComboBox
Add example for client-side disable/enable of RadComboBox

RadInput for ASP.NET AJAX
ShowPassword button for RadTextBox with TextMode Password
Implement the ShowPassword button for a RadTextBox with TextMode="Password".

RadListBox for ASP.NET AJAX
Minimize the SelectedIndexChanged server events fired when SelectionMode is Multiple for RadListBox
The SelectedIndexChanged server-side event is fired for each item when dragging to select multiple items in RadListBox

RadMediaPlayer for ASP.NET AJAX
Automatically play next video and have a PlayNext button
This example shows how to implement the logic for playing the next video and how to add and style the play next button.

RadMultiColumnComboBox for ASP.NET AJAX
Known Issues
This article lists the known issues in the RadMultiColumnComboBox control

Add custom data to dataitem similar to adding attributes in ItemDataBound event
This project shows how to modify the data items from SqlDataSource to add or hide any information to an item. This is similar to using and ItemDataBound server-side event and add some attributes to the item. 

Achieve SelectedIndexChanged server-side event behavior with RadMultiColumnComboBox
Achieve SelectedIndexChanged server-side event behavior with RadMultiColumnComboBox

[Marin Bratanov]

RadScheduler for ASP.NET AJAX
Customizing Timeslot based on start date hour when Scheduler has Timezone set
An example is added to demonstrate how to handle a scenario where the start hour of a timeslot is needed when the Scheduler has the Timezone set

RadWindow for ASP.NET AJAX
Restrict/Constrain window drag to left and top (real-time)
An example that shows how you can have custom constraints for a draggable RadWindow.

[Marin Bratanov]

RadAjax for ASP.NET AJAX
Redirecting to Another Page
Added information on how to redirect through the global RadAjaxManager instance.

RadAjaxManager Server Methods
Added information about getting the singleton RadAjaxManager reference through a static method.

RadGrid for ASP.NET AJAX
Improve RadGrid performance by reducing the number of slow queries to the database
Unnecessary queries to the database could be avoided by saving the data into a Session/Cookie variable and reuse the Session/Cookie data instead of sending queries to database as shown in the demo below.

[Rumen]

Progress® Telerik® UI for ASP.NET AJAX
Latest Internal Builds
What is LIB, its purpose and how to obtain it?

Clone or create Telerik controls on the client with JavaScript
An article describing why Telerik controls cannot be created on the client-side and suggesting possible approaches to overcome this.

Export large amount of data to PDF, XLSX and CSV using the Telerik Document Processing libraries
It is a resource dependent and sensitive topic to export large amount of data, even decent computers with enough resource would struggle or applications themselves are failing. Most common problem everyone is running into, is the Out of Memory Exception. How to export that amount of data then? The answer is, by using the Telerik Document Processing libraries.

RadGantt for ASP.NET AJAX
Configure the YearView of the Gantt so that looks like a Quarters view
Configure the YearView of the Gantt so that it shows Quarters.

RadHtmlChart for ASP.NET AJAX
Hide PieChart Labels for Specific Values
Explains how to hide some labels in RadHtmlChart (e.g., when the data value is zero).

RadMediaPlayer for ASP.NET AJAX
Remove buttons and title bar to create a minimalistic RadMediaPlayer for audio
Remove buttons and title bar to create a minimalistic RadMediaPlayer for audio

RadScheduler for ASP.NET AJAX
Multiple Selection for Timeline View of Scheduler
This sample demonstrates how you can achieve selection and multiple time slot selection for Timeline View of RadScheduler.

[Rumen]

Progress® Telerik® UI for ASP.NET AJAX
Determine the render mode of all Telerik controls and catch mixed render mode issues
Inspect the page for "mixed render mode" issue. This would improve your debugging experience and let you easily identify the controls with the unexpected RenderMode.

Set Common Properties or Behavior for a Type of Control
In some scenarios you may want to define a specific standard configuration/properties and behavior for some of these control types.

Commenting HTML in Web Forms
Details about comments in Web Forms

RadGrid for ASP.NET AJAX
Set Default Insert Value When Adding New Records in Grid
Pre-set default values to make it more convenient to fill up the form.

Virtualization
Add new section - Internal Logic and Use Cases

RadListBox for ASP.NET AJAX
Check/uncheck items on select in ListBox
Check/uncheck items on select in ListBox

RadMaskedTextBox for ASP.NET AJAX
Allow Only Upper and Lower Letters in the Mask
If you want to allow both upper and lower letters for the mask part, you can use the implementation demonstrated in the attached web site sample.

RadNumericTextBox for ASP.NET AJAX
Attach onkeydown or onkeyup to RadNumericTextBox Programmatically
The solution demonstrates how you can achieve this by subscribing to the client-side event from the code-behind programmatically.

RadPivotGrid for ASP.NET AJAX
Access and determine applied filters
RadPivotGrid provides built-in Includes/Excludes filtering. After the user filters the pivotgrid content, you may want to be able to get this information for indication or other reasons.

RadScheduler for ASP.NET AJAX
Override default Show More button behavior in Scheduler MonthView
Override default Show More button behavior in Scheduler MonthView.

Specified argument was out of the range of valid values. Parameter name: value error in Scheduler Timeline view
The following error is encountered when the RadScheduler1.TimelineView.NumberOfSlots property is set to a big number and the column width is set in pixels so that Horizontal scroll appears. The issue is reproduced by having an appointment staring in one of the last slots in the view.

RadSpreadsheet for ASP.NET AJAX
Load Excel file with SpreadsheetDocumentProvider when using Custom Provider
Use SpreadsheetDocumentProvider inside custom provider to Save/Load Excel files and have control over the data.

[Rumen]

Installer and VS Extensions for ASP.NET AJAX
Telerik AJAX components appear multiple times in Visual Studio 2010 toolbox
If you use VS2010 and get multiple instances of the same controls in the Toolbox, check this article to fix the issue.

NuGet feed for ASP.NET AJAX
Improve article Installing the Telerik controls from nuget package
The nuget package names for Document Processing Library assemblies are corrected.

Progress® Telerik® UI for ASP.NET AJAX
Improve Installing Telerik controls from a zip archive article
Added explanation of hotfix version of archives and when they are useful.

Executing JavaScript Code from Server-side in Web Forms and ASP.NET AJAX
Different ways to execute JavaScript from the server side in Web Form and AJAX frameworks.

Force JAWS to pronounce artbitrary text with JavaScript
Sometimes we need to force JAWS to read more text, either for further instructions or workaround a bug in a complex scenario. This article shows you how to do that.

RadAjax for ASP.NET AJAX
Improve RadAjaxManager Overview Article
Improve RadAjaxManager Overview Article

RadAsyncUpload for ASP.NET AJAX
AsyncUpload Security
Article updated with more information on encryption keys and info about new Custom Metadata type Whitelisting feature.

Unrestricted File Upload
Setting encryption keys is now mandatory. Information on avoiding the issue through general web.config networking settings was removed because it is not sufficiently safe. General readability and information structure improvements were made as well.

Insecure Direct Object Reference
Information on avoiding the issue through general web.config networking settings was removed because it is not sufficiently safe. Setting encryption keys is now mandatory.

Access temporary file name and manually delete tempfile from RadAsyncUpload
Accessing temporary files from UploadFile in RadAsyncUpload to get the name and remove the file manually

RadComboBox for ASP.NET AJAX
Combobox - Binding to DataTable, DataSet, or DataView
Combobox - Binding to DataTable, DataSet, or DataView

Improve "Filter ComboBox with CheckBox support enabled" Article
Improve "Filter ComboBox with CheckBox support enabled" Article

RadDropDownTree for ASP.NET AJAX
Navigate to selected node in RadDropDownTree
Navigate to selected node in RadDropDownTree

RadEditor for ASP.NET AJAX
Disable browser spellcheck and curly red underlines in RadEditor content area
See how to disable the browser spellchecker within the content area of RadEditor

Style inserted in text when deleting paragraph tag in Chrome
The KB shows how to fix a Chrome related issue which appears when deleting a paragraph and the browser adds a span with inline style.

RadGrid for ASP.NET AJAX
Save and Restore RadGrid filters in the code behind
Saving and Restoring filters can be as simple as saving the Grid's FilterExpression (Apply Default Filter on Initial Load). This, however, does not restore the filter functions and values for the Filter Controls automatically, it needs to be done manually. Parsing the FilterExpressions to get the information required to restore the filter values/functions can eventually be time consuming.

Improve Telerik RadGrid Data Binding Basics
Improve Telerik RadGrid Data Binding Basics

Enable GridDateTimeColumn calendar keyboard navigation
Added a code snippet showing how to access the Time picker and enabling the keyboard navigation inside GridDateTimeColumn

Edit and insert with autocomplete
Editing in RadGrid using RadAutoCompleteBox in GridTemplateColumn and built-in GridAutoCompleteColumn

Page for client-side export
Added a sample solution that calculates the height dynamically.

Same Properties in RadGrid, MasterTableView and GridTableView Tags
The principle is this – the RadGrid tag is the common place to set properties which inner levels inherit by default.

Using Templates in RadGrid with Client-Side Binding
The RadGrid dev team introduced a new option to define a template when the grid is bound on client-side - the ClientItemTemplate.

RadGrid Custom Paging and Aggregates
Since Aggregates calculation needs info from the entire database in order to display correctly the sum, count, etc. of the whole dataset, I am afraid this won’t be possible with Custom Paging.

RadGrid Batch Editing Templates and Specifics
RadGrid provides built-in Batch editing and it is one of the top and most popular editing modes

Persist Scroll Position of Grid with 100% Height After AJAX Request
Added a link with samples

RadHtmlChart for ASP.NET AJAX
Highlight series labels depending on the items' values
Learn how to style the SeriesItems labels depending on the item's value

Change shared tooltip client-side template of RadHtmlChart
Learn how to control the Tooltip appearance by defining a custom shared tooltip ClientTemplate

RadLightBox for ASP.NET AJAX
How to Access Controls in RadLightBox Template?
How to Access Controls in RadLightBox Template?

RadListBox for ASP.NET AJAX
Wrap RadListBoxItem text on a new line
Learn how to wrap a long text RadListBoxItem item on a new line.

RadListView for ASP.NET AJAX
Accessing Controls in ListView
There are various scenarios where it is required to access the Template controls of RadListView.

RadMenu for ASP.NET AJAX
Prevent highlight and color change in menu
Prevent highlight and color change in menu

RadNumericTextBox for ASP.NET AJAX
Separate spinner buttons of NumericTextBox
This article shows how with JavaScript and CSS the button for decreasing the value can be placed on the left side

RadTreeView for ASP.NET AJAX
TreeView Client Templates
An example is added how to use Attributes inside client-side templates.

RadWizard for ASP.NET AJAX
Prevent double clicking the Next or Finish Wizard buttons
Clicking the Finish button twice, will make two requests to the server, which would lead to executing the server-side logic twice. This can be a problem, for example, if a billing process takes place in the Finish button click handler.

[Rumen]

Progress® Telerik® UI for ASP.NET AJAX
Introduction
Added links for feedback channels and note about Telerik points winning opportunity.

Deploying a Telerik-enabled Web Application
Added more information and links for the different deploy procedures

RadAsyncUpload for ASP.NET AJAX
Add Wizard Finish button to PostbackTriggers collection of AsyncUpload
Persist RadAsyncUpload files in RadWizard until Finish button is clicked

Preview PDF files before uploading with RadAsyncUpload
Use PDF.js library to preview PDF files before uploading with RadAsyncUpload

RadGantt for ASP.NET AJAX
Create Hyperlink column in RadGantt
Create a hyperlink column in RadGantt.

Customize style and content of treelist column in RadGantt
Get a row in treelist view of RadGantt corresponding to a given task.

RadInput for ASP.NET AJAX
Change Input type of RadNumericTextBox from Client
See how to change the numeric type from number to currency and percent on the client

Set RadTextbox width by CSS, JavaScript or Server side
The article shows a couple of ways to change the RadTextbox's width by CSS, via JavaScript or Server side.

RadSpreadsheet for ASP.NET AJAX
Load and Save Spreadsheet via JSON
Save and Load RadSpreadsheet provider with JSON string, improve loading performance and access changes on postback

RadWindow for ASP.NET AJAX
RadWindow resize does not stop when releasing the mouse
When resizing a window by pressing and holding the left mouse button it happens that, when the mouse button is released, the resizing is not stopped. The article explains how to prevent this problem. tr

The iframe content gets invisible when dragging the window
RadWindow hides the iframes when resized or moved to prevent problems with the built-in events capturing of the iframes.

[Rumen]

RadGrid for ASP.NET AJAX
Set the Background Color of Multi-column Header Col Group

Change the background color of a RadGrid column

Access underlying dataitem values of RadGrid rows

Access Data Key values of Grid rows in RowContextMenu ItemClick event

Customize content when Exporting RadGrid to PDF
Example of using the Document Processing Libraries to customize the content when exporting RadGrid to PDF.

RadHtmlChart for ASP.NET AJAX
HtmlChart - Multiple Y-Axes
Added example on how to create additional YAxis from the code-behind

RadSearchBox for ASP.NET AJAX
Hide SearchBox on Initial Load

RadTreeList for ASP.NET AJAX
Determine Last Level of TreeList
Add tooltip for RadTreeList or RadGrid cell template content automatically

RadWizard for ASP.NET AJAX
Changing the width of a left or right positioned navigation bar