I had my RadGrid with DataSourceID - from Database. The data displays fine.
My original goal is delete the recod on the server and I noticed the sample from Help.
<telerik:RadGrid id="RadGrid1" runat="server" OnDeleteCommand="RadGrid1_DeleteCommand"
<MasterTableView AutoGenerateColumns="False" DataKeyNames="CustomerID">
When I tried to use that, the application never fires OnNeedDataSource event,
so my Grid is always empty .
Did I missed something or this code sample is not complete.