// GET: Accounts/Details/5
        public ActionResult Details(int?id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            Account account = ac.AccountById(id.Value);

            if (account == null)
            {
                return(HttpNotFound());
            }
            return(View(account));
        }