public ActionResult Create(Store store)
        {
            if (ModelState.IsValid)
            {
                db.Stores.Add(store);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            ViewBag.ProductId = new SelectList(db.Products, "ProductId", "Code", store.ProductId);
            ViewBag.ProductUnitId = new SelectList(db.ProductUnits, "ProductUnitId", "Name", store.ProductUnitId);
            return View(store);
        }
 public ActionResult Edit(Store store)
 {
     if (ModelState.IsValid)
     {
         db.Entry(store).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.ProductId = new SelectList(db.Products, "ProductId", "Code", store.ProductId);
     ViewBag.ProductUnitId = new SelectList(db.ProductUnits, "ProductUnitId", "Name", store.ProductUnitId);
     return View(store);
 }