protected void GvGroupRowCommand(object sender, GridViewCommandEventArgs e)
 {
     if (e.CommandName.Equals("Insert"))
     {
         var grpCode        = GvGroup.FooterRow.FindControl("ftrGroupCode") as TextBox;
         var grpDescription = GvGroup.FooterRow.FindControl("ftrGroupDescription") as TextBox;
         if (grpCode != null && grpDescription != null && !string.IsNullOrEmpty(grpCode.Text.Trim()) && !string.IsNullOrEmpty(grpDescription.Text.Trim()))
         {
             PageDataService.AddGroupAdoNet(grpCode.Text.Trim(), grpDescription.Text.Trim());
         }
         Response.Redirect(Request.RawUrl);
     }
 }