How to Add Auto Number Column in Asp.net GridView

While working in ASP.NET, you often come across a need to display serial number or Auto-number in a Gridview control. This can be accomplished by adding the Container.DataItemIndex  in the html markup of the Gridview control.

<asp:TemplateField>
     <ItemTemplate>
 <%# Container.DataItemIndex + 1 %>
     </ItemTemplate>
 </asp:TemplateField>