Big problem with drag and drop

[Michele]

Hello,
I'm trying to develop a simple sample with drag and drop but I've got big iussue...
first of all in all the C# demos I've got this :

 

    this.AddHandler(RadDragAndDropManager.DragQueryEvent,
                new EventHandler<DragDropQueryEventArgs>(AllowAllDragsEventHandler), true);

In C# does not exist AddHandler but += and -= ...am I missing something lately??

I tried converting all in += but as I run my user control in a webpage I got a stackoverflow of  EventHandler<DragDropQueryEventArgs> DragQuery

Another weird thing is that if I enable this :

  RadDragAndDropManager.SetAllowDrop(this, true);

Visual Studio 2008 crashes! (I've got a draganddroplistview as the sample and nothing else special inside...) If I turn if off it design it correctly....

Any suggestion?
Thanks in advance

Paolo

[Miroslav]

Hello Paolo,

The AddHandler is an extension method and you need the

using Telerik.Windows;

in your usings to see it. This is a standard pattern for registering handlers for routed events in both Silverlight and WPF. The routed events are not standard CLR events, although sometimes you do get convenience wrappers for them.

I tried to reproduce this in a sample project but I could not:

RadDragAndDropManager.SetAllowDrop(this, true);

Could you give us more information about the project you are using or best, send us a sample that breaks on your side.

Best wishes,
Miroslav
the Telerik team

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