状态设计模式

来源：互联网发布：平面设计需要的软件编辑：程序博客网时间：2024/06/05 16:52

场景：红绿灯

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace WCF_Binding{    public class Context    {        public IState State { get; set; }        public Context(IState state)        {            State = state;        }        public void Request()        {            State.Handler(this);        }    }   public interface IState    {       void Handler(Context context);    }   public class RedState : IState   {       public void Handler(Context context)       {           Console.WriteLine("红灯停");           context.State = new YellowState();       }   }   public class YellowState : IState   {       public void Handler(Context context)       {           Console.WriteLine("黄灯");           context.State = new GreenState();       }   }   public class GreenState : IState   {       public void Handler(Context context)       {           Console.WriteLine("绿灯行");           context.State = new RedState();       }   }   public class StateTest   {       public static void StateMain()       {           Context context = new Context(new RedState());           int i=1;           do           {               context.Request();               i++;           } while (i <= 6);           Console.ReadLine();       }   }}

0 0