public static void Main (string[] args)
{
var sender = new Sender ();
var dog = new Dog (sender);
var cat = new Cat (sender);
sender.StartTimer (1000, "Before unregister");
dog.Unregister (sender);
sender.StartTimer (2000, "After unregister");
}
public void Unregister (Sender sender)
{
sender.Mail -= Voice;
}
public Dog (Sender sender)
{
sender.Mail += Voice;
}
public Cat (Sender sender)
{
sender.Mail += Voice;
}