I am trying to add Excel like filtering for a dynamic RadGrid. I found this example that shows filtering with client-side binding: http://demos.telerik.com/aspnet-ajax/grid/examples/functionality/filtering/basic-filtering/defaultcs.aspx. However, I do not have GridBoundColumns because my RadGrid is dynamic. How do I go about adding Excel like filtering if I do not know the columns beforehand? Please show an example.