public async Task <IActionResult> Update(int id, [Bind("BookId", "Name", "ReleaseDate", "AuthorId", "Description")] Book book)
        {
            if (id != book.BookId)
            {
                return(NotFound());
            }

            ViewData["Authors"] = new SelectList(_authorDbSet.returnDbSetAuthor(), "AuthorId", "FirstAndLastName");
            if (await _updateData.UpdateBookAsync(id, book))
            {
                return(RedirectToAction(nameof(Index)));
            }
            else
            {
                return(NotFound());
            }
        }