public static void Main() { var phoneBook = new Phonebook(); phoneBook.Add(new Entry("Mimi Ivanova Shmatkata", "Plovdiv", "0888 12 34 56")); phoneBook.Add(new Entry("Kireto", "Varna", "052 23 45 67")); phoneBook.Add(new Entry("Daniela Ivanova Petrova", "Karnobat", "0899 999 888")); phoneBook.Add(new Entry("Bat Gancho", "Sofia", "02 946 946 946")); var resultByName = phoneBook.Find("Ivanova"); var resultByNameAndTown = phoneBook.Find("Bat", "Sofia"); var emptySearch = phoneBook.Find("NoSuchEntry"); PrintResults(resultByName); PrintResults(resultByNameAndTown); PrintResults(emptySearch); }