Posted 31 Aug 2012
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I have viewmodels for treenodes that expose only ReadOnlyObservableCollection for Children nodes.
The viewmodels have InsertChild and RemoveChild methods with some custom logic.
I would like to call these methods, but the DragEnded event is never fired because of unhandled NotSupportedException: Collection is read-only.
I need to add custom logic to every change in collection, not only changes made by RadTreeview.
How to do this? :)
ok, PreviewDragEnded seems to be the solution :)