public void DeleteBook(Book book)
        {
            DBAL_Library dbal_Library = new DBAL_Library();

            dbal_Library.DeleteBook(book);
        }
        public void EditBook(Book book)
        {
            DBAL_Library dbal_Library = new DBAL_Library();

            dbal_Library.EditBook(book);
        }
        public void CreateUser(User user)
        {
            DBAL_Library dbal_Library = new DBAL_Library();

            dbal_Library.CreateUser(user);
        }
        public void CreateBook(Book book)
        {
            DBAL_Library dbal_Library = new DBAL_Library();

            dbal_Library.CreateBook(book);
        }
        public List <User> GetUserList()
        {
            DBAL_Library dbal_Library = new DBAL_Library();

            return(dbal_Library.GetUserList());
        }
        public List <Book> GetBookList()
        {
            DBAL_Library dbal_Library = new DBAL_Library();

            return(dbal_Library.GetBookList());
        }