I follow the example in the WPF Control Examples application and Telerik website http://www.telerik.com/help/wpf/raddraganddrop-within-radgridview.html
. I was able to make it work with the sample "MessageViewModel" as the RadGridView.ItemSource. However, when I change the RadGridView.ItemSource to DataView (data is retreiving from DB as DataTable), I got error "Cannot insert external objects to this list." at line:
as RadGridView).ItemsSource as IList).Insert(index, draggedItem);
Does this feature work with DataView as ItemSource? How do I need to change to make it work?