static void Main(string[] args) { //Success met de opdracht! TelephoneBook book = new TelephoneBook(); List <IPerson> lastNameBook = book.SortByLastName(); Console.WriteLine("### Sorted by Lastname ###"); Print(lastNameBook); List <IPerson> firstCharBook = book.FirstNameStartWith('B'); Print(firstCharBook); List <IPerson> lengthBook = book.LastNameLongerThan(5); Print(lengthBook); List <IPerson> orderLastNameBook = book.SortByLastNameLength(); Print(orderLastNameBook); Console.ReadLine(); }