static Book GetBook(Old_BooksRepository oldBooksRepository) { var book = oldBooksRepository.Get(2); Console.WriteLine($"{book.Title}: {book.PagesCount}"); return(book); }
static void GetAllBooks(Old_BooksRepository oldBooksRepository) { var books = oldBooksRepository.Get(); foreach (var bookItem in books) { Console.WriteLine($"{bookItem.Title}: {bookItem.PagesCount}"); } }