static void Main(string[] args)
{
EmailManager _emailManager = new EmailManager();
SMSManager _smsmanager = new SMSManager();
OrderStatusChangeHandler _handler_one = new OrderStatusChangeHandler(_emailManager.Update);
OrderStatusChangeHandler _handler_two = new OrderStatusChangeHandler(_smsmanager.Notify);
Order _order = new Order("ODR100");
_order.Add_OrderStatusChanged(_handler_one);
_order.Add_OrderStatusChanged(_handler_two);
_order.ChangeOrderStatus(OrderStatus.CONFIRMED);
_order.ChangeOrderStatus(OrderStatus.DISPTACHED);
_order.ChangeOrderStatus(OrderStatus.DELIVERED);
}
public void Remove_OrderStatusChanged(OrderStatusChangeHandler handler)
{
this.OrderStatusChanged -= handler;
}
public void Add_OrderStatusChanged(OrderStatusChangeHandler handler)
{
this.OrderStatusChanged += handler;
}
