Add Serial Number in Gridview without Row_Number

Just add following code in Gridview,

<Asp:gridview id="grid_employee_details" runat="server" allowpaging="true">
    <column>
         <asp:Templatefield Headertext = "Sr. No.">
             <ItemTemplate>
                  <asp:label id="lbl_sr_no" Text = '<%# Container.DataItemIndex + 1 %>' runat="server"></asp:label>
             </ItemTemplate>
         </asp:Templatefield
    </column>
</Asp:gridview>

//Or we can also write

<asp:Templatefield Headertext = "Sr. No.">
             <ItemTemplate>
                 
<%# Container.DataItemIndex + 1
%>
             </ItemTemplate>
         </asp:Templatefield


Note - By-default gridview index or rows start from 0, and Container.DataItemIndex always starts with 0 index.