I`ve attached two sample for you demonstrating how to copy an item from one tree to another and how to prevent the removing of the item from the source tree. Basically, the RadTreeView
event handler is used which fires on both trees and you have to made some checks.
On the other hand, DragAndDrop
functionalities can also be created with the RadDragDropManager
and its events.You can also define custom Drag Cue / Arrow with them. There is an article here
which is a good starting point. Feel free to ask if you need more info.
the Telerik team
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