public ActionResult Create(Lookup lookup)
        {
            if (ModelState.IsValid)
            {
                db.Lookups.Add(lookup);
                db.SaveChanges();
                return Json(lookup.Id);
            }

            return View(lookup);
        }
 public ActionResult Edit(Lookup lookup)
 {
     if (ModelState.IsValid)
     {
         db.Entry(lookup).State = EntityState.Modified;
         db.SaveChanges();
         return Json(lookup.Id);
     }
     return View(lookup);
 }