Drag and drop same item from TreeView to multiple ListBoxes in Silverlight 3

I understand I can use a TreeViewDragDropTarget to wrap the TreeView and the ListBoxDragDropTarget to wrap the ListBox and then I can drap and drop items from one to the other.

But I am not sure how I can drag an item from the TreeView to the ListBox and don't actually remove the item from the TreeView, as I might n开发者_JAVA百科eed to drag the same item to another ListBox... In another word, I want this TreeView to be fixed, just be able to drag and drop its items around.

Any help would be much appreciated. :)

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I have found the answer from the following link.

http://forums.silverlight.net/forums/p/200602/468667.aspx