public ActionResult Edit(Receipt r)
 {
     if (ModelState.IsValid)
     {
         db.Entry(r).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(r);
 }
        public ActionResult Create(Receipt receipt)
        {
            if (ModelState.IsValid)
            {
                return View(receipt);
                //context.Add(receipt);
                //return RedirectToAction("Details", new { id = receipt.id });
            }

            return View(receipt);
        }