Unfortunately, this is not supported because the CTRL + Click event needs a client-side event handler and the RadGrid client-side API doesn't include such an event.
Before I close, I want to note that this a public forum which is not strictly monitored by our teams. A request like this will be better handled through our Support System, the Feedback Portal or our Outsourcing Service.
Please let me know if you need any additional information. Thank you for using the UI for ASP.NET AJAX forums.
Eric R | Senior Technical Support Engineer
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