Prevent SelectionChanged when Drag item

[Nalaka]

Hi,

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?

[Martin Ivanov]

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.

Regards,
Martin
Telerik

 

 

[Nalaka]

Hi Martin,

Thank you. It works.