状态模式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

/*

*/

namespace App_MYCS.HDL_SJMS.ZTMS
{
class my_ZTMS
{
public void dy()
{
//创业并初始化状态
Context c1 = new Context(new concreteStateA());
c1.Request();//转换下一个状态

c1.Request();//接着转换状态
}
}

//定义抽像状态变化处理
abstract class State
{
public abstract void Handle(Context context);
}
//定义状态类
class Context
{
private State state;

public Context(State state)
{
this.state = state;
}

public State State
{
get { return state; }
set {
state = value;
Console.WriteLine("当前状态");
}
}

public void Request()
{
state.Handle(this);
}
}

//子类状态转换
class concreteStateA : State
{

public override void Handle(Context context)
{
context.State = new concreteStateB();
}
}
class concreteStateB : State
{

public override void Handle(Context context)
{
context.State = new concreteStateA();
}
}
}

状态模式

原文：http://www.cnblogs.com/longkai178/p/5815115.html