static void Main(string[] args)
{
IOrderState orderState = OrderStatusFactory.Carate(OrderStatus.New);
Order order = new Order(orderState)
{
Id = 1,
Customer = "zxj",
OrderDate = DateTime.Now
};
Console.WriteLine("当前状态：{0}", order.Status());
Console.WriteLine("状态改变：{0}", OrderStatus.Shipped);
order.Ship();
Console.WriteLine("当前状态：{0}", order.Status());
order.Cancel();
Console.Read();
}
