public ActionResult RegisterUser(User user)
        {
            if (ModelState.IsValid)
            {
                return View("Result", user);
            }

            return View(user);
        }
 public ActionResult Result(User user)
 {
     return View(user);
 }
        public ActionResult RegisterUser()
        {
            var user = new User();

            return View(user);
        }