When you have two RadListBoxes on the page and you want to allow the transfer of items between them, you only need to set the TransferToID
property of the first ListBox. Please refer to the following demo to see a working example of this:
As you can see in the demo, although the property is set only on the first ListBox, you can transfer items in both directions.
As for the second part of your question, in order for the Transferred
server event to be fired, you have to set the AutoPostBackOnTransfer
property to true
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