//������Ϣ֪ͨ����
public void Add(object sender, Calculator.CalculateEventArgs e)
{
Console.WriteLine(e.x + e.y);
}
public void Substract(object sender, Calculator.CalculateEventArgs e)
{
Console.WriteLine(e.x - e.y);
}
//Main_8_5_1
public static void Main()
{
Calculator calculator = new Calculator();
//�¼�������
CalculatorManager cm = new CalculatorManager();
//�¼���
calculator.MyCalculate += cm.Add;
calculator.Calculate(100, 200);
calculator.MyCalculate += cm.Substract;
calculator.Calculate(100, 200);
//�¼�ע��
calculator.MyCalculate -= cm.Add;
calculator.Calculate(100, 200);
}
