Hi Senthil Gnaesa,
The copy context menu item can copy/paste cell values between grid cells. Currently, the functionality for copy/paste of grid rows between different instances of RadGridView is not built-in. Nevertheless, you can find sample implementations in following KB articles:
Copy/Pasting rows in and between RadGridViews
Implementing "Copy/Paste to Excel" functionality in RadGridView for WinForms
We plan to include this functionality in RadGridView in one of our upcoming releases.
When there is an active editor in RadGridView, you can use all standard hot keys in order to copy/paste text (e.g. Control+C; Control+V).
I hope this helps.
the Telerik team
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