public DateTime?BookDateRented(int id) { using (var database = new LibrarySystemProEntities()) { var allRentedBooks = new RentedBookRepository().ReadAll(); DateTime?result = null; foreach (var item in allRentedBooks) { if (item.BookId == id) { result = item.DateRented; } } return(result); } }
public bool IsBookRented(int id) { using (var database = new LibrarySystemProEntities()) { //var dbBook = database.Books.FirstOrDefault(b => b.Id == id); var allRentedBooks = new RentedBookRepository().ReadAll(); var result = false; foreach (var book in allRentedBooks) { if (book.BookId == id) { result = true; } } return(result); } }