void Print_NewMail(object o, NewMailEvent e)
{
Console.WriteLine("Print's EventMessage is {0},'{1}'", e.i, e.s);
}
public void SimulateNewMail(int i, string s)
{
NewMailEvent e = new NewMailEvent(i, s);
OnNewMail(e);
}
void Fax_NewMail(object o, NewMailEvent e)
{
Console.WriteLine("Fax's EventMessage is {0},'{1}'", e.i, e.s);
}
public virtual void OnNewMail(NewMailEvent e)
{
NewMail?.Invoke(this, e);
}