public void CheckOut(int discount, float finalPrice, int id_bill, int usingPoint = 0, int id_member = 0)
        {
            CheckoutReport report = new CheckoutReport();

            report.DataSource = BillDetailBus.Instance.getListBillDetailByBill(id_bill);
            report.Parameters["Discount"].Value   = discount;
            report.Parameters["CreateDate"].Value = DateTime.Now;
            report.Parameters["TotalPrice"].Value = finalPrice;
            ReportPrintTool tool = new ReportPrintTool(report);

            tool.ShowPreview();
        }
        public void CheckOut(int discount, float finalPrice, int id_bill, int usingPoint = 0, int id_member = 0)
        {
            //1000 điểm giảm 10%

            CheckoutReport report = new CheckoutReport();

            report.DataSource = BillDetailBus.Instance.getListBillDetailByBill(id_bill);
            report.Parameters["Discount"].Value   = discount;
            report.Parameters["CreateDate"].Value = DateTime.Now;
            report.Parameters["TotalPrice"].Value = finalPrice;
            ReportPrintTool tool = new ReportPrintTool(report);

            tool.ShowPreview();

            //Cập nhật lại điểm của Member
            MemberBus.Instance.UpdateMemberPoint(id_member, -usingPoint);
            if (finalPrice >= 100000)
            {
                MemberBus.Instance.UpdateMemberPoint(id_member, 200);
            }
        }