public ActionResult Create(TheaterModels theatermodels)
        {
            if (ModelState.IsValid)
            {
                db.Theaters.Add(theatermodels);
                db.SaveChanges();
                return RedirectToAction("Theaters");
            }

            return View(theatermodels);
        }
 public ActionResult Edit(TheaterModels theatermodels)
 {
     if (ModelState.IsValid)
     {
         db.Entry(theatermodels).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Theaters");
     }
     return View(theatermodels);
 }