public ActionResult Create(CartModels cartmodels)
        {
            if (ModelState.IsValid)
            {
                db.Cart.Add(cartmodels);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(cartmodels);
        }
 public ActionResult Edit(CartModels cartmodels)
 {
     if (ModelState.IsValid)
     {
         db.Entry(cartmodels).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(cartmodels);
 }