Currently to use a UserControl in RadGrid, it has to be in EditFormSettings defined as UserControlName. This functionallity requires filling all the controls of UserControl again on ItemDataBound event. It should be possible to put the UserControl in FormTemplate when EditFormType is "Template" . Thank you.
The RadGrid supports adding user controls into the FormTemplate when the EditFormSettings.EditFormType is set to Template: <%@ Register Src="~/WebUserControl.ascx" TagName="WebUserControl" TagPrefix="test" %> … <EditFormSettings EditFormType="Template"> <FormTemplate> <test:WebUserControl runat="server" /> </FormTemplate> </EditFormSettings>