Thanks for the clarification.
It seems that I have misunderstood you initially. Please, excuse me for that.
Unfortunately, the control does not provide an out-of-the-box mechanism for disabling its selection. A possible workaround would be to subscribe to the SelectionChanged event of the control, cast the SelectedItems
and remove the needed item. Please, check the following code snippet as an example.
var source = (
var list =
(e.AddedItems == source.ElementAt(0))
Hopefully, this helps.
Telerik by Progress
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