public ActionResult Books()
        {
            var list = DL_Book.GetList();

            ViewBag.Alert        = Session["Alert"];
            ViewBag.AlertStatus  = Session["AlertStatus"];
            ViewBag.AlertMessage = Session["AlertMessage"];
            return(View("index_old", list));
        }
        public ActionResult Checkout(int id)
        {
            DL_Book.CheckOut(id);
            //ViewBag.Alert = true;
            //ViewBag.AlertStatus = "success";
            //ViewBag.AlertMessage = "Checkout successful!";
            Session["Alert"]        = true;
            Session["AlertStatus"]  = "success";
            Session["AlertMessage"] = "Checkout successful!";

            return(RedirectToAction("books"));
        }
        public ActionResult Book(int id)
        {
            var book = DL_Book.GetBook(id);

            return(View(book));
        }
        public ActionResult Index()
        {
            var books = DL_Book.GetList().Take(10);

            return(View(books));
        }