Dropping on the root of the TreeView

2 posts, 0 answers
  1. alino
    alino avatar
    22 posts
    Member since:
    Sep 2010

    Posted 27 Oct 2010 Link to this post


    I have a problem about how i can control the dropping an Item before or after the root of the RadTreeView.  In my application, some item are not allowed to be dropped before or after a root (i.e some items can not be roots when I have man roots in the treeView).
    I can Control the inside dropping using  "IsDropAllowed"  property of the TreeViewItem.

    How can I control the "Before"  and "After" dropping?

    Thank U for your help.

  2. Petar Mladenov
    Petar Mladenov avatar
    3151 posts

    Posted 01 Nov 2010 Link to this post

    Hi alino,

    You can handle the PreviewDragEnded event of the RadTreeView and  to implement your custom drag and drop logic. I prepared a sample project demonstrating the functionality you have described. You can drag items from the left RadTreeView and drop them in the right RadTreeView  in order to build an entire new tree. You are able to create siblings of your first  root node and children nodes everywhere in the tree.

    Please examine the attached solution and let me know if it helps you. 

    Sincerely yours,
    Petar Mladenov
    the Telerik team
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