protected void lnbDelete_Click(object sender, EventArgs e)
 {
     try
     {
         int[] id = WebFormHelper.GetRowIdForDeletion(gvwMaster);
         paymentTypeProvider.Delete(id);
         Refresh();
     }
     catch (Exception ex)
     {
         WebFormHelper.SetLabelTextWithCssClass(lblMessage, ex.Message, LabelStyleNames.ErrorMessage);
     }
 }