public ActionResult Index(User U)
        {
            var username = Request.Cookies["UserName"].Value.ToString();
            int userId   = DbOperation.FetchIdByUserName(username);

            TempData["HintQuestion"] = DbOperation.FetchHintQuestionByUserName(username);
            U.UserId = username;

            if (DbOperation.Authenticity(U))
            {
                return(Redirect("/VisaCancellation"));
            }
            else
            {
                TempData["Msg"] = "Answer does not Match.Please Try Again";
                return(View());
            }
        }