I'm using RadTreeView's drag drop feature to reorder/nest items.
The control has many features that I (drop preview line, TreeViewDragVisual, and tooltip).
However, I need to execute some complex reorder/nest/unnest logic for the actual drag/drop operation (guards, pre and post).
So far, I was able to implement my guards by binding the RadTreeViewItem.IsDropAllowed.
But have no idea how to run some code before and after a drag/drop.
My questions:
1. Is it possible to invoke a command for a drag/drop operation, instead of automatically manipulating the bound collection?
2. Which events do I listen to before and after (collection is modified) a drag/drop operation? DragStarted and DragEnded events have been marked obsolete.
And if there is a workaround (custom implementation of drag/drop), can I continue using the other features of RadTreeView (drop preview line, TreeViewDragVisual, and tooltip)?
Thanks
minchew