protected void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                ConfirmationLetterService.ReceiveConfirmationLetter(txtConfirmationLetterNo.Text,
                                                                    dtpReceiveDate.SelectedDate.GetValueOrDefault(DateTime.Today));

                WebFormHelper.SetLabelTextWithCssClass(lblStatus,
                                                       String.Format("Confirmation Letter {0} has been received.", txtConfirmationLetterNo.Text),
                                                       LabelStyleNames.InfoMessage);

                btnSave.Enabled        = btnCancel.Enabled = false;
                dtpReceiveDate.Enabled = false;
                btnRefresh.Enabled     = false;
                dtpReceiveDate.DataBind();
            }
            catch (Exception ex)
            {
                WebFormHelper.SetLabelTextWithCssClass(lblStatus, ex.InnerException.Message, LabelStyleNames.ErrorMessage);
            }
        }