static void Main(string[] args) { Library library = new Library(); foreach (var item in library.ShowAll()) { Console.WriteLine("Book = {0} , Author = {1}", item.BookName, item.Author); } library.Add("цель", "голдрат єлиях"); foreach (var item in library.ShowAll()) { Console.WriteLine("Book = {0} , Author = {1}", item.BookName, item.Author); } List <Book> FindBook = library.FindByName("цель"); foreach (var item in FindBook) { Console.WriteLine("Book = {0} , Author = {1}", item.BookName, item.Author); } Console.ReadLine(); }