public ActionResult Update(int id)
        {
            /*using (var db = new ModelContext())
             * if (Session["Employee"] == null)
             * {
             *  return Redirect("/EmployeeLogin/Login");
             * }
             * using (var db = new ModelContext(
             * {
             *  ViewBag.model3 = db.Products.Find(id);
             *  return View();
             * }*/

            using (var db = new ModelContext())
            {
                var pvm = db.Products.Find(id);
                var e   = new ProductViewModel2();
                e.Category     = pvm.Category;
                e.ItemNo       = pvm.ItemNo;
                e.PhotoUrl     = pvm.PhotoUrl;
                e.ItemName     = pvm.ItemName;
                e.UnitPrice    = pvm.UnitPrice;
                e.Author       = pvm.Author;
                e.Publisher    = pvm.Publisher;
                e.Overview     = pvm.Overview;
                e.Size         = pvm.Size;
                e.Type         = pvm.Type;
                e.Stock        = pvm.Stock;
                ViewBag.model3 = e;
                return(View(e));
            }
        }
 public ActionResult UpdateCheck(ProductViewModel2 pvm)
 {
     if (Session["Employee"] == null)
     {
         return(Redirect("/EmployeeLogin/Login"));
     }
     using (var db = new ModelContext())
     {
         if (!ModelState.IsValid)
         {
             return(View("UpDate"));
         }
         Product e = new Product();
         e.Category     = pvm.Category;
         e.ItemNo       = pvm.ItemNo;
         e.PhotoUrl     = pvm.PhotoUrl;
         e.ItemName     = pvm.ItemName;
         e.UnitPrice    = pvm.UnitPrice;
         e.Author       = pvm.Author;
         e.Publisher    = pvm.Publisher;
         e.Overview     = pvm.Overview;
         e.Size         = pvm.Size;
         e.Type         = pvm.Type;
         e.Stock        = pvm.Stock;
         ViewBag.model4 = e;
         return(View(e));
     }
 }