public ActionResult Checkout()
        {
            ViewBag.TotalQuantity = GetTotalQuanity();
            Member member = Session["Member"] as Member;

            try
            {
                ViewBag.DiscountCodeDetailListByMemer = _discountCodeDetailService.GetDiscountCodeDetailListByMember(member.id);
                return(View());
            }
            catch (Exception)
            {
                return(View());
            }
        }