RadTreeview - Disable Drag to sibling of root elements in Radwindow (DragOver not hit)

[Metin]

Hi,

I have 2 radtreeviews in a radwindow. And IsDragDropEnabled is enabled for the treeviews.
The drag and drop operations are working great. 

I also prevent some drag operations using 

DragDropManager.AddDragOverHandler(e.PreparedItem, OnItemDragOver, true);

Now my problem:
This method is not hit when i drag an item to the buttom of treeview (out of all item's bounds) and therefore
i cannot prevent drag to the sibling of a root level element. 

I am using 2013 Q3

Also check the screenshot please.

Thanks for the help.

[Metin]

 If you attach the event of
DragDropManager.AddDragOverHandler(this.AssociatedObject, OnItemDragOver, true);

in

treeview.ItemPrepared+=AssociatedObject_ItemPrepared;

than it does not hit the OnItemDragOver as i mantioned in the previous post.

But if you attach the event earlier it hits the event while dragover last root level element's sibling.

FYI.

[Nick]

Hello Metin,

Basically if you subscribe to the Drag events with handledEventsToo, you should receive the events even though they are handled in the internal logic of the TreeView. 
Perhaps you can open a support ticket and attach a sample which we can debug in order to see what exactly goes wrong? 

Regards,
Nik
Telerik

[Metin]

For now i have no time to create a project for this. I attached to this event and dragcompleted
in the constructor of my attached dependency property. I have seen that in your demo, but in the demo
you attach the event in the item_prepared event which has not worked for me.

Since my problem solved by changing the level of binding to the event, i am fine.

Thanks for your help.