protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     if (e.CommandName == "DeleteRec")
     {
         city.CityId = int.Parse(e.CommandArgument.ToString());
         city.DeleteCity();
         lblMsg.Text          = "Record Deleted..";
         GridView1.DataSource = city.ShowAllCity();
         GridView1.DataBind();
     }
     else if (e.CommandName == "UpdateRec")
     {
         Response.Redirect("~/Admin/Update/frmUpdateCity.aspx?CityId=" + e.CommandArgument);
     }
 }