I would recommend you to implement the drag and drop using DragDropManager or RadDragAndDropManager. You could check the sample project (using RadDragAndDropManager) I have already sent you in your other forum thread.
For the future we will further develop only the DragDropManager, so you could as well review the Row Reordering demo which is available with the latest Q2 2012 release.
All the best,
Didie
the Telerik team
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