C#设计模式之【状态模式】

using System;using System.Collections.Generic;using System.Text;namespace 状态模式{ class Program { static void Main(string[] args) { //紧急项目 Work emergencyProjects = new Work(); emergencyProjects.Hour = 9; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 10; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 12; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 13; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 14; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 17; //emergencyProjects.WorkFinished = true; emergencyProjects.TaskFinished = false; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 19; emergencyProjects.WriteProgram(); emergencyProjects.Hour = 22; emergencyProjects.WriteProgram(); Console.Read(); } } //抽象状态 public abstract class State { public abstract void WriteProgram(Work w); } //上午工作状态 public class ForenoonState : State { public override void WriteProgram(Work w) { if (w.Hour < 12) { Console.WriteLine("当前时间：{0}点 上午工作，精神百倍", w.Hour); } else { w.SetState(new NoonState()); w.WriteProgram(); } } } //中午工作状态 public class NoonState : State { public override void WriteProgram(Work w) { if (w.Hour < 13) { Console.WriteLine("当前时间：{0}点 饿了，午饭；犯困，午休。", w.Hour); } else { w.SetState(new AfternoonState()); w.WriteProgram(); } } } //下午工作状态 public class AfternoonState : State { public override void WriteProgram(Work w) { if (w.Hour < 17) { Console.WriteLine("当前时间：{0}点 下午状态还不错，继续努力", w.Hour); } else { w.SetState(new EveningState()); w.WriteProgram(); } } } //晚间工作状态 public class EveningState : State { public override void WriteProgram(Work w) { if (w.TaskFinished) { w.SetState(new RestState()); w.WriteProgram(); } else { if (w.Hour < 21) { Console.WriteLine("当前时间：{0}点 加班哦，疲累之极", w.Hour); } else { w.SetState(new SleepingState()); w.WriteProgram(); } } } } //睡眠状态 public class SleepingState : State { public override void WriteProgram(Work w) { Console.WriteLine("当前时间：{0}点 不行了，睡着了。", w.Hour); } } //下班休息状态 public class RestState : State { public override void WriteProgram(Work w) { Console.WriteLine("当前时间：{0}点 下班回家了", w.Hour); } } //工作 public class Work { private State current; public Work() { current = new ForenoonState(); } private double hour; public double Hour { get { return hour; } set { hour = value; } } private bool finish = false; public bool TaskFinished { get { return finish; } set { finish = value; } } public void SetState(State s) { current = s; } public void WriteProgram() { current.WriteProgram(this); } }}