Prevent SelectionChanged when Drag item

3 posts, 1 answers
  1. Nalaka
    Nalaka avatar
    12 posts
    Member since:
    Mar 2014

    Posted 08 Feb 2015 Link to this post


    I'm using RadTreeView and RadScheduleView. I want to drag items from the tree view and drop into appointment in the ScheduleView. But the problem is when I start drag item in the tree, it will be selected. I want to prevent this selection when I drag item(That means click and holds the mouse left button). But for normal left button click it should be selected. Any ideas how to achieve this?
  2. Answer
    Martin Ivanov
    Martin Ivanov avatar
    1442 posts

    Posted 09 Feb 2015 Link to this post

    Hi Nalaka,

    In order to achieve your requirement you can deselect the currently selected item in the DragInitialize event handler of the DragDropManager. Here is an example:
    DragDropManager.AddDragInitializeHandler(this.tree, OnTreeDragInit, true);
    private void OnTreeDragInit(object sender, DragInitializeEventArgs e)
        var options = DragDropPayloadManager.GetDataFromObject(e.Data, TreeViewDragDropOptions.Key) as TreeViewDragDropOptions;
        if (options != null)
            options.DragSourceItem.IsSelected = false;
    Please let me know if this helps.


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  3. Nalaka
    Nalaka avatar
    12 posts
    Member since:
    Mar 2014

    Posted 09 Feb 2015 in reply to Martin Ivanov Link to this post

    Hi Martin,

    Thank you. It works.
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