I'm experiencing an issue where the page becomes unresponsive for a long time whenever any Telerik control (such as refresh or loader) is triggered. The page keeps loading indefinitely, causing significant delays, and eventually, the page becomes unresponsive.

Additionally, the following error appears in the browser console:

Uncaught Sys.WebForms.PageRequestManagerTimeoutException: Sys.WebForms.PageRequestManagerTimeoutException: The server request timed out.
at Error.create (https://test.plc.com/GS/Telerik.Web.UI.WebResource.axd?...:6:2736)
at Sys.WebForms.PageRequestManager._createPageRequestManagerTimeoutError (https://wpinhouse.knpc.com/GPCS/Telerik.Web.UI.WebResource.axd?...:15:11219)
at Sys.WebForms.PageRequestManager._onFormSubmitCompleted (https://wpinhouse.knpc.com/GPCS/Telerik.Web.UI.WebResource.axd?...:15:11219)

The issue arises when interacting with Telerik controls that trigger a page request, causing the page to hang and ultimately become unresponsive.

issue started from Feb 17 2025

I am getting error "You are trying to navigate to a non-existing folder or you do not have proper permissions to view this folder.
Please, contact the administrator." in my production environment. It is happening randomly. 

Thanks.

got this error

'Could not load file or assembly 'Telerik.Web.UI, Version=2024.3.805.462, Culture=neutral, PublicKeyToken=121fae78165ba3d4' or one of its dependencies. Invalid pointer (Exception from HRESULT: 0x80004003 (E_POINTER))'

Hi,

I have checked the paste functionalities in your demo webforms editor page: https://demos.telerik.com/aspnet-ajax/editor/examples/overview/defaultcs.aspx

However, I don't see there's a Paste from PDF functionality. It would be great if you can treat this as a feature request for your webforms editor.

Hi,

I am facing a new issue that seems to be connected to my previous ticket (Bug Report ID:1676729 - Unexpected New Line Insertion When Pressing Enter After Making Text Bold in Telerik Rad Editor), regarding overriding the setCursor method in the InsertParagraphCommand.

After applying the suggested workaround to override the setCursor method, I've encountered a new issue: when typing text in the RadEditor and pressing Enter, the cursor does not immediately move to the next line. It requires pressing Enter twice for the cursor to move.

Could you please assist in resolving this issue.

Thank you for your continued support.

I have a datatable in memory that I would like to display in a telerik:RadSpreadsheet. I know I can iterate through the datatable and build a sheet to display. 

I'm trying to figure out how to use the DataTableFormatProvider to load the datatable in one shot. I found examples of how to do with the Telerik.Windows.Documents spreadsheet, but how do I do  it with the RadSpreadsheet model?

I used the Telerik Theme Builder to create several themes based on Bootstrap.  They work great with all the controls I've tested so far except for the Editor.

In the Editor, the Color Pickers for text work, but when you go into the table wizard, the Color Picker as well as Alignment, Back Color, and CSS Class have transparent backgrounds, so I'm missing some styles.

The Editor has: 

EnableEmbeddedSkins="false"
ExternalDialogsPath="~/EditorDialogs"  
RenderMode="auto"
ContentAreaMode="Iframe" 
DialogHandlerUrl="~/Telerik.Web.UI.DialogHandler.axd">

Code Behind calls a function to get the correct theme: 

Dim DialogPath As String = SetEditorDialogCss.DialogSkinCSS
radeditorpagetext.DialogsCssFile = DialogPath.ToString
radeditorpagetext.TableLayoutCssFile = DialogPath.ToString

Return "/site/theme1.css"

theme1.css contains: 

@import url("/App_Skins/Bootstrap/theme/Button.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Card.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/ColorPicker.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/ComboBox.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/DataForm.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Dock.Bootstrap.css");
@import url('/App_Skins/Bootstrap/theme/DropdownGrid.MDparty1.css');
@import url('/App_Skins/Bootstrap/theme/DropDownList.MDparty1.css');
@import url('/App_Skins/Bootstrap/theme/DropDownTree.MDparty1.css');
@import url("/App_Skins/Bootstrap/theme/Editor.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/FormDecorator.Bootstrap.css");  
@import url("/App_Skins/Bootstrap/theme/Grid.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Input.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Label.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/ListBox.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Menu.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/MultiSelect.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/PanelBar.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Ribbonbar.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Rotator.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Slider.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Splitter.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/TabStrip.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/ToolBar.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/TreeList.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/TreeView.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Upload.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Window.Bootstrap.css");
@import url("/App_Skins/Bootstrap/theme/Wizard.Bootstrap.css");

What am I missing?  I made several themes and the problem happens with all of them. 

One note about the ThemeBuilder.  The Bootstrap zip file download has 10 copies of Button.Mytheme.css that seem to be identical.

• I have full trust enabled.
• I have both RadAjax.Net2 and RadGrid.Net2 added as SafeControls (as is my UserControl).
• The folders (hosting the dlls, user control and RadControls files) all have read & execute access enabled for the Thread Account.
• The site uses forms based authentication.

With the R2 2022 release Telerik added this support via a skin (BlackMetroTouch) but it seems it is limited to a server side setting and can't be done via client side? In particular I'm looking to do this for the RadGrid and change it via a user toggle and not have to make a post back to reload the page. Please let me know if there exists a way to do it at client-side.

Thanks,
Gerry