static void Main(string[] args)
{
PhoneCreator creator = new PhoneCreator();
PhoneBook phones = new PhoneBook();
phones.Add(creator.CreatePhone("0296704790", "Ivan Petrov"));
phones.Add(creator.CreatePhone("0447235235", "Petya Sidorov"));
phones.Add(creator.CreatePhone("0252435345", "Borzenkov"));
phones.Add(creator.CreatePhone("0446423424", "Student Bezfamilniy"));
Console.WriteLine("Text format: \n");
phones.SaveToTextfile("data.txt");
foreach (Phone phone in phones)
Console.WriteLine(phone.ToString());
phones.LoadFromTextfile("data.txt");
Console.WriteLine("\nBinary format: \n");
phones.SaveToBinaryFile("data.bin");
foreach (Phone phone in phones)
Console.WriteLine(phone.ToString());
phones.LoadFromBinaryFile("data.bin");
Console.WriteLine("\nXML format: \n");
phones.SaveToXmlFile("data.xml");
foreach (Phone phone in phones)
Console.WriteLine(phone.ToString());
phones.LoadFromXmlFile("data.xml");
Console.Read();
}