public void TakeBook(User user, Book book) { UserCard findCard = (from uc in this.Usercards where uc.UserId == user.Id select uc).First(); findCard.addHistoryItem(book.Id, DateTime.Now); }
public void addUsercards(UserCard newUsercards) { var isExist = Users.Exists(newUsercards.Equals); if (!isExist) { this.Usercards.Add(newUsercards); } }
static void Main(string[] args) { Library library = new Library(1); Book b1 = new Book(1, "Война и мир", "Лев Толстой", "Исторический роман", 1980, "Эксмо", 5); Book b2 = new Book(2, "Война миров", "Герберт Уэллс,", "Фантастический роман", 1980, "Эксмо", 5); library.addBook(b1); library.addBook(b2); library.BooksSaveToXML(); library.addUser(new User(1, "Анатолий", "Агеев", "9876543213")); library.BookDeleteFromXML(b1); UserCard uk = new UserCard(1, 1); Console.ReadLine(); }