public ActionResult Login(User user)
        {
            try
            {
                MetaniContext context = new MetaniContext();
                User          userDb  = context.Login(user);
                if (userDb != null)
                {
                    Session["Login"]    = true;
                    Session["Username"] = userDb.Username;
                    return(RedirectToAction("Index", "Admin"));
                }

                return(View());
            }
            catch
            {
                return(View());
            }
        }