protected void btnAddTitle_Click(object sender, EventArgs e)
        {
            AddBookTitleRequest request = new AddBookTitleRequest();
            request.ISBN = txtBookISBN.Text;
            request.Title = txtBookTitle.Text;

            LibraryService service = ServiceFactory.CreateLibraryService();

            service.AddBookTitle(request);
            DisplayBooks();
        }
        public AddBookTitleResponse AddBookTitle(AddBookTitleRequest request)
        {
            AddBookTitleResponse response = new AddBookTitleResponse();

            BookTitle bookTitle = new BookTitle();
            bookTitle.ISBN = request.ISBN;
            bookTitle.Title = request.Title;

            _bookTitleRepository.Add(bookTitle);
            _uow.Commit();

            response.Success = true;

            return response;
        }