public ActionResult InsertSalesItem(string ProductCode, int Quantity, string UnitPrice, string TotalCost, int RestOfAmount)
        {
            var      UserID = "1001";
            DateTime today  = DateTime.Today;

            using (PharmacyEntities dc = new PharmacyEntities())
            {
                var result = dc.prISalesIntem(ProductCode, Quantity, UnitPrice, TotalCost, RestOfAmount, UserID, today, "").ToString();
                //var result = dc.prISalesIntem("6", 1, "10", "20", RestOfAmount, UserID, today, "").ToString();
                return(Json(result, JsonRequestBehavior.AllowGet));
            }
            return(Json("", JsonRequestBehavior.AllowGet));
        }