Adding Link to datagridview dynamically

<asp:GridView ID="GridView1" runat="server" EnableViewState="false" AutoGenerateColumns="False"
    ShowFooter="True" DataKeyNames="VendorId" AllowPaging="True" CellPadding="3"
    PageSize="5" BackColor="White" BorderColor="White" BorderStyle="Ridge" CellSpacing="1"
    Width="100%" BorderWidth="2px" GridLines="None" AllowSorting="true"  OnRowDataBound="gv_RowDataBound">
    <Columns>
        <asp:TemplateField HeaderText="Edit" ShowHeader="False">
            <ItemTemplate>
                <asp:LinkButton ID="complain_no" runat="server" CausesValidation="False" CommandName="complain_no"
                    Text="complain_no"></asp:LinkButton>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="date" SortExpression="VendorFName">

            <ItemTemplate>
                <asp:Label ID="Label1" runat="server" Text='<%# Bind("date") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="name" SortExpression="VendorLName">
            <ItemTemplate>
                <asp:Label ID="name" runat="server" Text='<%# Bind("name") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        
    </Columns>
    <RowStyle BackColor="#DEDFDE" ForeColor="Black" />
    <FooterStyle BackColor="#C6C3C6" ForeColor="Black" />
    <PagerStyle ForeColor="Black" HorizontalAlign="Right" BackColor="#C6C3C6" />
    <SelectedRowStyle BackColor="#9471DE" Font-Bold="True" ForeColor="White" />
    <HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#E7E7FF" />
</asp:GridView>



protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
    {
       // Use debug and see the column which u got. 
       // check the column. if its linkbutton column then
       // do your code here.

    }

}

In ur design mode right click on gridview and click on edit columns then add column. there you can find DataGridViewLinkColumn. chose and apply then ok.
and add CellClick event to the grid from Properties pane. There after the code behind code as follows.

private void DgvView_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                if (e.ColumnIndex == 0)//if ur link columnIndex (complain_no ColumnIndex) is zero 
                {
                  // Display your data here
                }
            } 
            catch(Exception e)
            {
            }
         }

// same procedure in vb.net also. so convert into vb.net code.

I have already tried this.But I don't want to add new column.I have complain_no,date,name etc as columns.My task is I want to add link to complain_no column which after clicking will display details related to that number.