As you posted your request under the Telerik Platform forums, I cannot tell for sure which RadGrid component you're using. We provide a Grid component for multiple platforms - WPF, Silverlight, ASP.NET AJAX and therefore we would need to know which one you're inquiring about.
I would also recommend that you post your queries under the forum of the specific product as this will ensure that your questions reach the respective development community and our support specialists in a timely manner. You can also take advantage of our support plans to be able to submit support requests directly for the DevTools products and have a guaranteed 24hour response time.
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