static void Main(string[] args)
            {
                //奶奶想吃猪肉大葱馅的饺子
                PatrickLiuAndWife liuAndLai = new PatrickLiuAndWife();             //命令接受者
                Command           command   = new MakeDumplingsCommand(liuAndLai); //命令
                PaPaInvoker       papa      = new PaPaInvoker(command);            //命令请求者

                //奶奶发布命令
                papa.ExecuteCommand();


                Console.Read();
            }
 public MakeDumplingsCommand(PatrickLiuAndWife worker) : base(worker)
 {
 }
 protected Command(PatrickLiuAndWife worker)
 {
     _worker = worker;
 }