Specifying the Serial number in the GridView in ASP.Net

you just need to add the following code as the first template field of the GridView:

<asp:TemplateField>

    <HeaderTemplate>

        Serial No.

    </HeaderTemplate>

    <ItemTemplate>

        <%# Container.DataItemIndex + 1 %>

    </ItemTemplate>

</asp:TemplateField>

Complete code for the GridView becomes

<asp:GridView ID="GridView1" runat="server"

    AutoGenerateColumns="False" CellPadding="4" 

    ForeColor="#333333" GridLines="None" 

    onpageindexchanging="GridView1_PageIndexChanging" 

    Width="180%" Font-Size="Medium" PageSize="19" 

    onrowdatabound="GridView1_RowDataBound">

                    

    <Columns>

        <asp:TemplateField>

              <HeaderTemplate>

                        Serial No.

              </HeaderTemplate>

              <ItemTemplate>

                  <%# Container.DataItemIndex + 1 %>

              </ItemTemplate>

          </asp:TemplateField>

        <asp:BoundField DataField="TYPE" HeaderText="Type" />

        <asp:BoundField DataField="CHANNEL" HeaderText="Chanel" />

        <asp:BoundField DataField="CALLERID" HeaderText="Caller ID" />

        <asp:BoundField DataField="RECEIVED_STATUS" HeaderText="CallStatus" />

        <asp:BoundField DataField="REMARK" HeaderText="Remark" />

    </Columns>

</asp:GridView>