Based on the supplied information, it is hard to determine what is causing the unwanted behavior at your end. Could you please elaborate a bit more on your scenario. How the RadGrid columns are created declaratively or programmatically? How the RadGrid is bound? Also could you please post your aspx page markup code with the related code behind. Thus we will be able to gather more details about your scenario and to provide you a solution.
Looking forward for your reply.
Regards,
Radoslav
the Telerik team
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