private void BtnSettlePayments_MouseClick(object sender, MouseEventArgs e)
        {
            PanelSettlePayments.Visible = true;
            List <Data.Sale> L1 = new List <Sale>();

            L1 = objPOSService.Get_SelectedSale(tn, "Dine_In");
            TextBoxTotalAmount.Text    = L1[0].Balance.ToString();
            TextBoxTotalAmount.Enabled = false;
            person = Convert.ToInt32(L1[0].NumberOfPerson.ToString());
        }