Hi Stoyo,

We want to use dragdrop on the diagram- tree nodes we are dropping on diagram nodes - with following code but it is not working:

diagram.AllowDrop = true;
DragDrop.AddDropHandler(diagram, new DragEventHandler(diagran_DropEvent));
DragDrop.AddDragOverHandler(diagram, new DragEventHandler(diagran_DragOver));
 

but this was not working then we used thirdparty dragdropmanager class using below code:

           DragAndDropManager.SetAllowDrop(diagram, true);
           DragAndDropManager.AddDropInfoHandler(diagram, new EventHandler<DragDropEventArgs>(diagran_DropEvent));
           DragAndDropManager.AddDropQueryHandler(diagram, new EventHandler<DragDropQueryEventArgs>(diagran_DragOver));
 

Now the drop is working but in a strange way - when we drop directly onto the diagram the dragover and drop event do not fire - when we drop on the nodes also the dragover events fire but drop do not fire - but when we drag an item over the node and cross it and drop it on diagram then the drop event gets fired.

We also tried setting node allowdrop and providing node drag/drop events but then also dropping on the node do not fire drop event.

What we are looking at is to get the drop event fired when we drop on the node. Could you please suggest as what could be the reason of this.

Thanks,
Bala