Thanks for writing.
The fact that there is not such a version of RadControls for WinForms suggests that may be you are using RadControls for ASP.NET AJAX. If this is so, please confirm it and we will transfer your question to the right department. Alternatively, you can open a new support ticket and select the control under the ASP.NET AJAX section.
In case that you are using RadControls for WinForms, please share which version you are using. Further, please describe your issue in details.
I am looking forward to your reply.
All the best,
the Telerik team
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