public ActionResult Login(User user)
        {
            if (String.IsNullOrEmpty(user.Email) || String.IsNullOrEmpty(user.Password))
            {
                return(RedirectToAction("Login"));
            }

            string password = PublicFunction.HashPassword(user.Password);

            user.Password = PublicFunction.HashPassword(password);
            string loginStatus = db.Login(user);

            if (loginStatus == "Success" && db.IsAdmin(user))
            {
                Session["AdminUser"] = user;
                return(RedirectToAction("Index", "Management"));
            }
            return(RedirectToAction("Login"));
        }