public string FindTitleBook(string findText)
        {
            var    Books = _сontext.Books.Include(p => p.author).Where(p => p.Title.ToLower().Contains(findText.ToLower())).ToList <Book>();
            string json  = JsonSerializer.Serialize(BookDTO.ToListBookDTO(Books));

            return(json);
        }
        public string AllBookAuthor(int authorID)
        {
            var    FindAuthor = _сontext.Authors.Find(authorID);
            var    FindBooks  = _сontext.Books.Include(p => p.Genre).Where(p => p.author == FindAuthor).ToList <Book>();
            string json       = JsonSerializer.Serialize(BookDTO.ToListBookDTO(FindBooks));

            return(json);
        }
        public string FindBooks(int year, bool sort)
        {
            List <Book> Books;

            if (sort != false)
            {
                Books = _сontext.Books.Where(p => p.DateWrite.Year == year).OrderByDescending(p => p.Title).ToList <Book>();
            }
            else
            {
                Books = _сontext.Books.Where(p => p.DateWrite.Year == year).OrderBy(p => p.Title).ToList <Book>();
            }
            string json = JsonSerializer.Serialize(BookDTO.ToListBookDTO(Books));

            return(json);
        }