From time to time customers ask us if it is possible to implement client-side binding with our RadListView for ASP.Net AJAX.  Although, this is not currently available as a built-in feature, one can very easily extend the control with some jQuery magic and Microsoft's proposed client-side templates.   I have prepared a small sample app which demonstrates a basic implementation of client-side population through infinite scroll. The actual functionality is wrapped into a good old Ajax Control Extender, which can be hooked to a RadListView. The sample contains two pages - one illustrating full client-side population, and another showing an initial server-side...

Creating custom columns for RadGridView is super easy - all you need to do is to override CreateCellElement and/or CreateCellEditElement methods and return desired controls. To illustrate this I’ve made a column with RadProgressBar for view mode and RadSlider for edit mode:   And here is the code: public class GridViewPercentageColumn : GridViewDataColumn { public override FrameworkElement CreateCellElement(GridViewCell cell, object dataItem) { var bar = cell.Content as RadProgressBar; if (bar == null) ...

Our partners from Falafel Software are starting 2-day online training sessions on Telerik Automated Testing Tools. This instructor-led course provides students with the skills to test applications built with the latest web technologies. You will learn Telerik WebUI Test Studio Developer Edition from the ground up and you will be able to automate any website or application: HTML, ASP.NET, JavaScript, AJAX, Silverlight and MVC.  See more details and register!

It seems that there are many developers that want to use this combo, as my previous blog posts are quite popular. The problem with the suggested solution is that you need to customize the control template of RadComboBox. There is a much easier way to put a RadTreeView in a Popup – by using a RadDropDownButton: <telerik:RadDropDownButton HorizontalContentAlignment="Left" DropDownWidth="200" IsOpen="{Binding SelectedItem, Converter={StaticResource ObjectToFalseConverter}, ElementName=TreeView, Mode=TwoWay}" Content="{Binding SelectedItem.Text, FallbackValue='Please, select an item.', ElementName=TreeView}"> <telerik:RadDropDownButton.DropDownContent> <telerik:RadTreeView x:Name="TreeView" ItemsSource="{StaticResource Items}" ItemTemplate="{StaticResource ItemTemplate}" /> </telerik:RadDropDownButton.DropDownContent> </telerik:RadDropDownButton> .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; }   This way you could easily access the RadTreeView instance in the code-behind, however I would recommend using a ViewModel and bindings instead.   The DropDownButton Content property is bound to the SelectedItem property of...

A few developers asked how to use the RadTransitionControl to enable transition effects in their applications especially in RadTabControl. The RadTransitionControl and TransitionPresenter can be used instead of ContentControl and ContentPresenter to enable some animations when their content changes. Source Code RadTabControl usually have some RadTabItems and displays the Headers of the RadTabItems with ItemsPresenter and the Content of the Selected RadTabItem in a ContentPresenter. So if we edit the template of the RadTabControl and replace the ContentPresenter with TransitionPresenter the content should switch with animation when you go from one tab to another. It’s easier to use RadTransitionControl than TransitionPresenter but the Presenter is more lightweight than the Control. We will demonstrate how to use the RadTransitionControl first....