private void btnSubmit_Click(object sender, EventArgs e)
        {
            var sdDao = new StockDetailsDao();
            int serviceId = (cmbServiceID.SelectedItem as Service).Id;
            string serviceName = (cmbServiceID.SelectedItem as Service).Name;
            int stockVal = Convert.ToInt32(numQty.Text) - ActualStock;
            //stockVal = -(stockVal);
            sdDao.UpdateStockDetail(stockVal, serviceId);

            int poId = 0;
            int.TryParse(txtId.Text, out poId);

            int cUser = (cmbReferenceBy.SelectedItem as Employee).Id;

            var poObj = new VIPPrasadam
            {
                Id = poId,
                ServiceId = (cmbServiceID.SelectedItem as Service).Id,
                VIPName = txtVIPName.Text,
                Phone = txtPhone.Text,
                ReferenceBy = cUser,
                Qty = Convert.ToInt32(numQty.Text),
                VisitedDate = Convert.ToDateTime(dtVisitedDate.Value),
                IssuedBy = App.LoggedInEmployee.Id
            };

            var poDao = new VIPPrasadamDao();
            int tokenId = poDao.SaveVIPPrasadam(poObj);

            var savedTokens = new List<VIPPrasadam>();

            poObj = poDao.getTokenById(tokenId);
            savedTokens.Add(poObj);
            ShowVIPPrasadam();
            PrintTokens2(savedTokens);
        }