Drag&Drop readonlycollection

1 posts, 0 answers
  1. Radiation
    Radiation avatar
    13 posts
    Member since:
    Jul 2012

    Posted 31 Aug 2012 Link to this post

    Hi,







    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? :)



    [EDIT]

    ok, PreviewDragEnded seems to be the solution :)



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