public ActionResult OthersBookPublisher()
        {
            int bookPublisherID = PublisherDAL.GetBookPublisher();

            ViewBag.BookPublishers = BookDAL.GetBooksBelongToBookPublisher(bookPublisherID);
            var bookPublishers = PublisherDAL.GetPublishers();

            return(View(bookPublishers));
        }
        public ActionResult BookDetail(int ID)
        {
            var book = BookDAL.GetBook(ID);

            ViewBag.BookCategory = BookCategoryDAL.GetBookCategory(book.BookCategoryID.Value);
            ViewBag.Publisher    = PublisherDAL.GetBookPublisher(book.PublisherID.Value);
            if (book == null)
            {
                Response.StatusCode = 404;
                return(null);
            }
            return(View(book));
        }