RadMenu provides a rich client-side API and object model that can help you create
a copy/paste functionality using quite a straightforward approach. This example
uses a context menu containing only three items - "Cut", "Copy"
and "Paste". The OnClientItemClicked event is
wired up to copy the text to the ClipBoard and then paste it to another text area.
With this example, you can copy, cut and paste the entire text, not only a selection
of it.