static void Main(string[] args)
{
MailMenager mm = new MailMenager();
Fax fax = new Fax(mm);
mm.SimulateNewMail("a","b","c");
Console.ReadLine();
}
public void Unregister(MailMenager mm)
{
mm.NewMail -= FaxMsg;
}
public Fax(MailMenager mm)
{
mm.NewMail += FaxMsg;
}
