{

     GridView.DataBind();
     TextBox UserName =
            (TextBox)GridView.Rows[e.RowIndex].FindControl("TextBox1");
     TextBox Password =
          (TextBox)GridView.Rows[e.RowIndex].FindControl("TextBox2");
     Label lbl= (Label)GridView.Rows[e.RowIndex].FindControl("Label2");
     SqlDataSource1.UpdateCommand = "Update UserDetails Set UserName='" +
         UserName.Text + "', Password='" + Password.Text + "' where Exi_ID="
         + lbl.Text + " And Edition_Id="+ Session["Edition_ID"].ToString() +
         "";
  }