崔鹏飞的Blog

发表于 Disqus： 本文字数： 992 阅读时长 ≈ 1 分钟

用new修饰的方法,在编译期按变量类型调用

所以：

Number number = new IntNumber();
number.ShowInfo();

会显示”base class—“

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class Number
{
    public static int i = 123;

    public virtual void ShowInfo()
    {
        Console.WriteLine("base class---");
    }

    public virtual void ShowNumber()
    {
        Console.WriteLine(i.ToString());
    }
}

class IntNumber : Number
{
    new public static int i = 456;

    public new virtual void ShowInfo()
    {
        Console.WriteLine("Derived class---");
    }

    public override void ShowNumber()
    {
        Console.WriteLine("Base number is {0}", Number.i.ToString());
        Console.WriteLine("New number is {0}", i.ToString());
    }
}

class Test_Number
{
    public static void Main() //Main_6_1_1
    {
        Number num = new Number();
        num.ShowNumber();
        IntNumber intNum = new IntNumber();
        intNum.ShowNumber();
        intNum.ShowInfo();
        Number number = new IntNumber();
        //究竟调用了谁？
        number.ShowInfo();
        //究竟调用了谁？
        number.ShowNumber();
        Console.Read();
    }
}
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发表于 Disqus： 本文字数： 1.1k 阅读时长 ≈ 1 分钟

C# Code：

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public static void Main3_3_3()
{
    int x = 10;

    int y = 6;
    if (x > y)
    {
        Console.WriteLine(x);
    }
    else
    {
        Console.WriteLine(y);
    }

    Console.Read();
}

对应MSIL及其注释：

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.method  public  hidebysig  static  void  Main3_3_3() cil managed 
{ 
.maxstack 2 
.locals init ( 
[0] int32 x, 
[1] int32 y, 
[2]  bool  CS$4$0000)  //定义三个变量
L_0000: nop 
L_0001: ldc.i4.s 10  //把整型值10载入堆栈 
L_0003: stloc.0  //把刚才载入堆栈的10赋值给第一个local变量，也就是int x=10; 
L_0004: ldc.i4.6  //把整型值6载入堆栈 
L_0005: stloc.1  //把刚才载入堆栈的6赋值给第二个local变量，也就是int y=6; 
L_0006: ldloc.0 
L_0007: ldloc.1  //这两句，把x,y两个local变量载入堆栈 
L_0008: cgt  //比较x，y的大小，结果会保存在堆栈最上方（结果以0或1表示true ，false） 
L_000a: ldc.i4.0  //把0载入堆栈 
L_000b: ceq  //比较0和cgt的运算结果是否相等，结果会保存在堆栈最上方（结果以0或1表示true ，false） 
L_000d: stloc.2  //ceq的运算结果保存入bool变量中 
L_000e: ldloc.2  //再把ceq运算结果载入 
L_000f: brtrue.s L_001a  //判断跳转，若跳转显式Y，不跳转显式X 
L_0011: ldloc.0 
L_0012: callvoid  [mscorlib]System.Console::WriteLine(int32)
L_0017: nop 
L_0018: br.s L_0021 
L_001a: ldloc.1 
L_001b: callvoid  [mscorlib]System.Console::WriteLine(int32)
L_0020: nop 
L_0021: call int32 [mscorlib]System.Console::Read() 
L_0026: pop 
L_0027: ret 
}
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发表于 Disqus： 本文字数： 1.6k 阅读时长 ≈ 1 分钟 

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

namespace ConsoleApplication1
{
    abstract class Element
    {
        public abstract void Accept(Visitor v);
    }

    class Elem1 : Element
    {
        public override void Accept(Visitor v)
        {
            v.VisitElem1(this);
        }
    }

    class Elem2 : Element
    {
        public override void Accept(Visitor v)
        {
            v.VisitElem2(this);
        }
    }

    abstract class Visitor
    {
        public abstract void VisitElem1(Elem1 e1);
        public abstract void VisitElem2(Elem2 e2);
    }

    class Visitor1 : Visitor
    {
        public override void VisitElem1(Elem1 e1)
        {
            Console.WriteLine(this.GetType().Name + "  " + e1.GetType().Name);
        }

        public override void VisitElem2(Elem2 e2)
        {
            Console.WriteLine(this.GetType().Name + "  " + e2.GetType().Name);
        }
    }

    class Visitor2 : Visitor
    {
        public override void VisitElem1(Elem1 e1)
        {
            Console.WriteLine(this.GetType().Name + "  " + e1.GetType().Name);
        }

        public override void VisitElem2(Elem2 e2)
        {
            Console.WriteLine(this.GetType().Name + "  " + e2.GetType().Name);
        }
    }

    class ObjStructure
    {
        private List<Element> elems = new List<Element>();

        public void add(Element e)
        {
            elems.Add(e);
        }

        public void visit(Visitor v)
        {
            foreach (Element e in elems)
            {
                e.Accept(v);
            }
        }
    }

    class Client
    {
        public static void Main()
        {
            ObjStructure o = new ObjStructure();
            o.add(new Elem1());
            o.add(new Elem2());
            o.visit(new Visitor1());
            o.visit(new Visitor2());
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.2k 阅读时长 ≈ 1 分钟 

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

namespace ConsoleApplication1
{
    abstract class Expretion
    {
        public void Translate(Words w)
        {
            string s = w.MyWords.Substring(0, 1);
            w.MyWords = w.MyWords.Substring(2);
            Excute(s);
        }

        public abstract void Excute(string s);
    }

    class EnglishExpretion : Expretion
    {
        public override void Excute(string s)
        {
            switch (s)
            {
                case "e":
                    Console.WriteLine("对方说的英语");
                    break;
            }
        }
    }

    class GermanExpretion : Expretion
    {
        public override void Excute(string s)
        {
            switch (s)
            {
                case "g":
                    Console.WriteLine("对方说的德语");
                    break;
            }
        }
    }

    class Words
    {
        private string words;

        public string MyWords
        {
            get { return words; }
            set { words = value; }
        }
    }

    class Client
    {
        public static void Main()
        {
            Words w = new Words();
            w.MyWords = "e g e e g ";
            Expretion e = null;
            while (w.MyWords.Length > 0)
            {
                switch (w.MyWords.Substring(0, 1))
                {
                    case "e":
                        e = new EnglishExpretion();
                        break;
                    case "g":
                        e = new GermanExpretion();
                        break;
                }

                e.Translate(w);
            }

            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.3k 阅读时长 ≈ 1 分钟 
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using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;

namespace ConsoleApplication1
{
    class MovieTheater
    {
        private Hashtable movies = new Hashtable();

        public void GiveMeAMovie(string name)
        {
            Movie m;
            if (movies.ContainsKey(name))
            {
                m = (Movie) movies[name];
            }
            else
            {
                m = new ConcreteMovie(name);
                movies.Add(name, m);
            }

            m.ShowTheMovie();
        }

        public void HowManyMoviesHaveWeOrdered()
        {
            Console.WriteLine(movies.Count);
        }
    }

    abstract class Movie
    {
        protected string name;

        public Movie(string n)
        {
            this.name = n;
        }

        public abstract void ShowTheMovie();
    }

    class ConcreteMovie : Movie
    {
        public ConcreteMovie(string n)
            : base(n)
        {
        }

        public override void ShowTheMovie()
        {
            Console.WriteLine(name);
        }
    }

    class Client
    {
        public static void Main()
        {
            MovieTheater mth = new MovieTheater();
            mth.GiveMeAMovie("Hell Boy");
            mth.GiveMeAMovie("Wanted");
            mth.GiveMeAMovie("Wall-E");
            mth.GiveMeAMovie("Hell Boy");
            mth.GiveMeAMovie("Hell Boy");
            mth.GiveMeAMovie("Wanted");
            mth.GiveMeAMovie("Wall-E");
            mth.GiveMeAMovie("Hell Boy");
            mth.HowManyMoviesHaveWeOrdered();
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.6k 阅读时长 ≈ 1 分钟

设计模式---中介者模式（打出来是“终结者.......”）

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

namespace ConsoleApplication1
{
    abstract class FBIAgent
    {
        public abstract void SendMessage(string m);

        public void ReadMessage(string m)
        {
            Console.WriteLine(m);
        }
    }

    class AgentInRussia : FBIAgent
    {
        private FBICenter center;

        public AgentInRussia(FBICenter f)
        {
            center = f;
        }

        public override void SendMessage(string m)
        {
            center.Send(this, m);
        }
    }

    class AgentInEngland : FBIAgent
    {
        private FBICenter center;

        public override void SendMessage(string m)
        {
            center.Send(this, m);
        }

        public AgentInEngland(FBICenter f)
        {
            center = f;
        }
    }

    abstract class FBICenter
    {
        public abstract void Send(FBIAgent f, string m);
    }

    class RealFBICenter : FBICenter
    {
        private FBIAgent agentinrussia;
        private FBIAgent agentinengland;

        public FBIAgent russia
        {
            set { agentinrussia = value; }
        }

        public FBIAgent england
        {
            set { agentinengland = value; }
        }

        public override void Send(FBIAgent f, string m)
        {
            if (f == agentinengland)
            {
                agentinrussia.ReadMessage(m);
            }
            else
            {
                agentinengland.ReadMessage(m);
            }
        }
    }

    class Client
    {
        public static void Main()
        {
            RealFBICenter fc = new RealFBICenter();
            AgentInEngland eng = new AgentInEngland(fc);
            AgentInRussia rus = new AgentInRussia(fc);
            fc.england = eng;
            fc.russia = rus;
            eng.SendMessage("我在英国搞情报，hia~hia~");
            rus.SendMessage("我在俄罗斯搞情报，xia~ixa~");
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.4k 阅读时长 ≈ 1 分钟

设计模式—命令模式

d1fc651edbf349ec1ad5765a.jpg

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

namespace ConsoleApplication1
{
    abstract class Order
    {
        protected General general;

        public Order(General g)
        {
            this.general = g;
        }

        public abstract void Excute();
    }

    class Fire : Order
    {
        public Fire(General g)
            : base(g)
        {
        }

        public override void Excute()
        {
            general.ExcuteFire();
        }
    }

    class Retreat : Order
    {
        public Retreat(General g)
            : base(g)
        {
        }

        public override void Excute()
        {
            general.ExcuteRetreat();
        }
    }

    class Soldier
    {
        private String name;

        public Soldier(string n)
        {
            this.name = n;
        }

        public void ExcuteFire()
        {
            Console.WriteLine(name + "开火");
        }

        public void ExcuteRetreat()
        {
            Console.WriteLine(name + "撤退");
        }
    }

    class General
    {
        private Soldier soldier;

        public void ExcuteFire()
        {
            soldier.ExcuteFire();
        }

        public void SetSoldier(Soldier s)
        {
            this.soldier = s;
        }

        public void ExcuteRetreat()
        {
            soldier.ExcuteRetreat();
        }
    }

    class Client
    {
        public static void Main()
        {
            General g = new General();
            Soldier s = new Soldier("张三");
            g.SetSoldier(s);
            Order o = new Fire(g);
            o.Excute();
            o = new Retreat(g);
            o.Excute();
            g.SetSoldier(new Soldier("李四"));
            o.Excute();
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.4k 阅读时长 ≈ 1 分钟

2008年08月17日 星期日 下午 04:28

0dceef368c252b290b55a959.jpg

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

namespace ConsoleApplication1
{
    abstract class Officer
    {
        protected Officer myboss;

        public Officer(Officer o)
        {
            myboss = o;
        }

        public abstract void Deal(Action a);
    }

    class PoliceMan : Officer
    {
        public PoliceMan(Officer o)
            : base(o)
        {
        }

        public override void Deal(Action a)
        {
            if (a == Action.逮捕罪犯)
            {
                Console.WriteLine("我是警察，我去逮捕罪犯");
            }
            else if (myboss != null)
            {
                myboss.Deal(a);
            }
        }
    }

    class FBI : Officer
    {
        public FBI(Officer o)
            : base(o)
        {
        }

        public override void Deal(Action a)
        {
            if (a == Action.暗杀)
            {
                Console.WriteLine("我是FBI，我去暗杀");
            }
            else if (myboss != null)
            {
                myboss.Deal(a);
            }
        }
    }

    class Precident : Officer
    {
        public Precident(Officer o)
            : base(o)
        {
        }

        public override void Deal(Action a)
        {
            if (a == Action.干掉萨达姆)
            {
                Console.WriteLine("我是总统，我去找人干掉萨达姆");
            }
            else if (myboss != null)
            {
                myboss.Deal(a);
            }
        }
    }

    enum Action
    {
        逮捕罪犯,
        暗杀,
        干掉萨达姆
    }

    class Client
    {
        public static void Main()
        {
            Officer police = new PoliceMan(new FBI(new Precident(null)));
            police.Deal(Action.逮捕罪犯);
            police.Deal(Action.暗杀);
            police.Deal(Action.干掉萨达姆);
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.2k 阅读时长 ≈ 1 分钟

2008年08月15日 星期五 下午 05:23

松耦合

09e79510c02a0e19203f2e7e.jpg

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

namespace ConsoleApplication1
{
    abstract class Vehicle
    {
        protected Engine e;

        public abstract void Show();

        public abstract void InstallEngine(Engine e);
    }

    class RacingCar : Vehicle
    {
        public override void Show()
        {
            Console.WriteLine("跑车");
            e.Show();
        }

        public override void InstallEngine(Engine e)
        {
            this.e = e;
        }
    }

    class Tractor : Vehicle
    {
        public override void Show()
        {
            Console.WriteLine("拖拉机");
            e.Show();
        }

        public override void InstallEngine(Engine e)
        {
            this.e = e;
        }
    }

    abstract class Engine
    {
        public abstract void Show();
    }

    class RacingCarEngine : Engine
    {
        public override void Show()
        {
            Console.WriteLine("跑车引擎");
        }
    }

    class TractorEngine : Engine
    {
        public override void Show()
        {
            Console.WriteLine("拖拉机引擎");
        }
    }

    class Client
    {
        public static void Main()
        {
            Vehicle v = new RacingCar();
            v.InstallEngine(new RacingCarEngine());
            v.Show();

            v = new Tractor();
            v.InstallEngine(new TractorEngine());
            v.Show();

            Console.Read();
        }
    }
}
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发表于 Disqus： 本文字数： 614 阅读时长 ≈ 1 分钟

设计模式—单例模式（singleton）

c56fe019dbd71a62dbb4bd42.jpg

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

namespace ConsoleApplication1
{
    class Singleton
    {
        private static Singleton s;

        private Singleton()
        {
        }

        public static Singleton GetInstance()
        {
            if (s == null)
            {
                s = new Singleton();
            }

            return s;
        }
    }

    class Client
    {
        public static void Main()
        {
            Singleton s1 = Singleton.GetInstance();
            Singleton s2 = Singleton.GetInstance();
            if (object.ReferenceEquals(s1, s2))
            {
                Console.WriteLine("一样的");
                Console.WriteLine(s1);
            }

            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 878 阅读时长 ≈ 1 分钟

设计模式—备忘录模式（CSDN没有恢复迹象……）

7f6bab1990e5495243a9ad1c.jpg

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

namespace ConsoleApplication1
{
    class 人物状态
    {
        private int _血;
        private int _气;

        public 人物状态()
        {
            _气 = 100;
            _血 = 100;
        }

        public int 血
        {
            get { return _血; }
            set { _血 = value; }
        }

        public int 气
        {
            get { return _气; }
            set { _气 = value; }
        }

        public 存档 存档()
        {
            return new 存档(_血, _气);
        }

        public void 读档(存档 c)
        {
            this.气 = c.气;
            this.血 = c.血;
        }

        public void 战斗()
        {
            System.Random r = new System.Random();

            this._血 = r.Next(100);
            this._气 = r.Next(100);
        }

        public void ShowState()
        {
            Console.WriteLine(this.气 + " " + this.血);
        }
    }

    class 存档
    {
        private int _气;

        private int _血;

        public 存档(int x, int q)
        {
            this._气 = q;
            this._血 = x;
        }

        public int 气
        {
            get { return _气; }
        }

        public int 血
        {
            get { return _血; }
        }
    }

    class 管理器
    {
        private 存档 savedfile;

        public 存档 SavedFile
        {
            get { return savedfile; }
            set { savedfile = value; }
        }
    }

    class 调用者
    {
        public static void Main()
        {
            人物状态 r = new 人物状态();
            r.ShowState();

            管理器 g = new 管理器();
            g.SavedFile = r.存档();
            r.战斗();
            r.ShowState();
            r.读档(g.SavedFile);
            r.ShowState();
            Console.Read();
        }
    }
}
``

发表于 Disqus： 本文字数： 1.8k 阅读时长 ≈ 2 分钟

设计模式—组合模式（CSDN依然没有恢复迹象……）

7fef7ad965c15b3411df9b0d.jpg

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

namespace ConsoleApplication1
{
    abstract class AbstractCompany
    {
        protected String Name;

        public AbstractCompany(string name)
        {
            this.Name = name;
        }

        public abstract void Add(AbstractCompany c);

        public abstract void Remove(AbstractCompany c);

        public abstract void Show(int len);

        public abstract void DoJob();
    }

    class RealCompany : AbstractCompany
    {
        private IList<AbstractCompany> Son = new List<AbstractCompany>();

        public RealCompany(string name) : base(name)
        {
        }

        public override void Add(AbstractCompany c)
        {
            Son.Add(c);
        }

        public override void DoJob()
        {
            Console.WriteLine(Name + "公司正常运转");
            foreach (AbstractCompany a in Son)
            {
                a.DoJob();
            }
        }

        public override void Remove(AbstractCompany c)
        {
            Son.Remove(c);
        }

        public override void Show(int len)
        {
            Console.WriteLine(new String('-', len) + Name);
            foreach (AbstractCompany a in Son)
            {
                a.Show(len + 1);
            }
        }
    }

    class HR : AbstractCompany
    {
        public HR(string name) : base(name)
        {
        }

        public override void Add(AbstractCompany c)
        {
        }

        public override void DoJob()
        {
            Console.WriteLine(Name + "人事部正常运转");
        }

        public override void Remove(AbstractCompany c)
        {
        }

        public override void Show(int len)
        {
            Console.WriteLine(new string('-', len) + Name);
        }
    }

    class Client
    {
        public static void Main()
        {
            AbstractCompany root = new RealCompany("总公司");
            root.Add(new HR("总公司人事部"));

            RealCompany r = new RealCompany("分公司");
            r.Add(new HR("分公司人事部"));

            root.Add(r);

            root.Show(1);
            root.DoJob();

            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.2k 阅读时长 ≈ 1 分钟

53a941eefca8a5ecb3fb9578.jpg

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

namespace ConsoleApplication1
{
    abstract class Birds
    {
        public abstract void Fly();

        public abstract void Shout();
    }

    class Duck : Birds
    {
        public override void Fly()
        {
            Console.WriteLine("鸭子飞");
        }

        public override void Shout()
        {
            Console.WriteLine("鸭子叫唤");
        }
    }

    class Chick : Birds
    {
        public override void Fly()
        {
            Console.WriteLine("小鸡飞");
        }

        public override void Shout()
        {
            Console.WriteLine("小鸡飞");
        }
    }

    class Adapter : Birds
    {
        private Eagle eagle = new Eagle();

        public override void Fly()
        {
            eagle.Fly();
        }

        public override void Shout()
        {
            eagle.Shout();
        }
    }

    class Eagle
    {
        public void Fly()
        {
            Console.WriteLine("老鹰飞");
        }

        public void Shout()
        {
            Console.WriteLine("老鹰叫唤");
        }
    }

    class Client
    {
        public static void Main()
        {
            Birds b = new Duck();
            b.Fly();
            b.Shout();
            b = new Chick();
            b.Fly();
            b.Shout();
            b = new Adapter();
            b.Fly();
            b.Shout();
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.4k 阅读时长 ≈ 1 分钟

设计模式—状态模式（今天CSDN竟然上不去，暂时发在这里）

58cbf8feaccd5d265d60085a.jpg

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

namespace ConsoleApplication1
{
    abstract class State
    {
        public abstract void DoWhatIShouldDo(Worker w);
    }

    class Young : State
    {
        public override void DoWhatIShouldDo(Worker w)
        {
            if (w.Age <= 35)
            {
                Console.WriteLine("我年轻，逍遥自在");
            }
            else
            {
                w.State = new MiddleAge();
                w.DoWhatIShouldDo();
            }
        }
    }

    class MiddleAge : State
    {
        public override void DoWhatIShouldDo(Worker w)
        {
            if (w.Age <= 50)
            {
                Console.WriteLine("人到中年");
            }
            else
            {
                w.State = new Old();
                w.DoWhatIShouldDo();
            }
        }
    }

    class Old : State
    {
        public override void DoWhatIShouldDo(Worker w)
        {
            Console.WriteLine("老年生活");
        }
    }

    class Worker
    {
        State state;
        int age;

        public Worker()
        {
            age = 1;
            state = new Young();
        }

        public int Age
        {
            get { return age; }
            set { age = value; }
        }

        public State State
        {
            get { return State; }
            set { state = value; }
        }

        public void DoWhatIShouldDo()
        {
            state.DoWhatIShouldDo(this);
        }
    }

    class Client
    {
        public static void Main()
        {
            Worker w = new Worker();
            w.Age = 5;
            w.DoWhatIShouldDo();
            w.Age = 45;
            w.DoWhatIShouldDo();
            w.Age = 80;
            w.DoWhatIShouldDo();
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.2k 阅读时长 ≈ 1 分钟 
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using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using System.Configuration;

namespace ConsoleApplication1
{
    internal interface SportMan
    {
        void Come();
    }

    class ChineseSportMan : SportMan
    {
        public void Come()
        {
            Console.WriteLine("中国运动员来了~~~");
        }
    }

    class RussianSportMan : SportMan
    {
        public void Come()
        {
            Console.WriteLine("俄罗斯运动员来了~~~");
        }
    }

    class TheController
    {
        public static SportMan CreateSportMan()
        {
            //string s = (string)ConfigurationSettings.AppSettings["Nation"];
            return (SportMan) Assembly.Load("ConsoleApplication1")
                .CreateInstance("ConsoleApplication1." + ConfigurationSettings.AppSettings["Nation"].ToString());
            //ConfigurationSettings.AppSettings[];
            //return new ChineseSportMan();
        }
    }

    class Client
    {
        public static void Main()
        {
            TheController.CreateSportMan().Come();
            //s.Come();
            //SportMan  c=(SportMan)Assembly.Load("ConsoleApplication1").CreateInstance("ConsoleApplication1.ChineseSportMan");
            //c.Come();
        }
    }
}

设计模式---抽象工厂模式+反射+配置文件

发表于 Disqus： 本文字数： 2.3k 阅读时长 ≈ 2 分钟

设计模式---观察者模式（恐怖袭击、地震的例子，有类关系图）

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

namespace ConsoleApplication1
{
    internal interface Warning
    {
        String Situation { get; set; }
        void Warn();
        void Add(PeopleInSchool p);
        void Sub(PeopleInSchool p);
    }

    class PoliceStation : Warning
    {
        private IList<PeopleInSchool> field = new List<PeopleInSchool>();
        string situation;

        public string Situation
        {
            get { return situation; }
            set { situation = value; }
        }

        public void Warn()
        {
            foreach (PeopleInSchool p in field)
            {
                p.WarningReceived();
            }
        }

        public void Add(PeopleInSchool p)
        {
            field.Add(p);
        }

        public void Sub(PeopleInSchool p)
        {
            field.Remove(p);
        }
    }

    class EarthquakeDepartment : Warning
    {
        string situation;
        private IList<PeopleInSchool> field = new List<PeopleInSchool>();

        public string Situation
        {
            get { return situation; }
            set { situation = value; }
        }

        public void Warn()
        {
            foreach (PeopleInSchool p in field)
            {
                p.WarningReceived();
            }
        }

        public void Add(PeopleInSchool p)
        {
            field.Add(p);
        }

        public void Sub(PeopleInSchool p)
        {
            field.Remove(p);
        }
    }

    abstract class PeopleInSchool
    {
        protected Warning field;

        public PeopleInSchool(Warning w)
        {
            field = w;
        }

        public abstract void WarningReceived();
    }

    class Teacher : PeopleInSchool
    {
        public Teacher(Warning w)
            : base(w)
        {
        }

        public override void WarningReceived()
        {
            Console.WriteLine("我是老师" + field.Situation);
        }
    }

    class Student : PeopleInSchool
    {
        public Student(Warning w)
            : base(w)
        {
        }

        public override void WarningReceived()
        {
            Console.WriteLine("我是学生" + field.Situation);
        }
    }

    class Client
    {
        public static void Main()
        {
            PoliceStation p = new PoliceStation();
            Teacher t = new Teacher(p);
            Student s = new Student(p);
            p.Add(t);
            p.Add(s);
            p.Situation = "有恐怖袭击！！！";
            p.Warn();
            p.Situation = "注意防火防盗！！！";
            p.Warn();
            EarthquakeDepartment e = new EarthquakeDepartment();
            t = new Teacher(e);
            s = new Student(e);
            e.Add(t);
            e.Add(s);
            e.Situation = "要地震了！！！";
            e.Warn();
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 1.7k 阅读时长 ≈ 2 分钟 
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using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    abstract class Builder
    {
        public abstract void SetPrice();
        public abstract void SetName();
    }

    class TVBuilder : Builder
    {
        private RawMateria rm;

        public TVBuilder()
        {
            rm = new RawMateria();
        }

        public override void SetPrice()
        {
            rm.Price = "1500";
        }

        public override void SetName()
        {
            rm.Name = "TV";
        }

        public RawMateria GetTV()
        {
            return rm;
        }
    }

    class PCBuilder : Builder
    {
        private RawMateria rm;

        public PCBuilder()
        {
            rm = new RawMateria();
        }

        public override void SetName()
        {
            rm.Name = "PC";
        }

        public override void SetPrice()
        {
            rm.Price = "2000";
        }

        public RawMateria GetPC()
        {
            return rm;
        }
    }

    class RawMateria
    {
        String _name;
        String _price;

        public String Name
        {
            get { return _name; }
            set { _name = value; }
        }

        public String Price
        {
            get { return _price; }
            set { _price = value; }
        }

        public void Show()
        {
            Console.WriteLine(this.Name + "    " \ + this.Price );
        }
    }

    class Director
    {
        private PCBuilder pcbuilder = new PCBuilder();
        private TVBuilder tvbuilder = new TVBuilder();

        public RawMateria GiveMeTV()
        {
            tvbuilder.SetName();
            tvbuilder.SetPrice();
            return tvbuilder.GetTV();
        }

        public RawMateria GiveMePC()
        {
            pcbuilder.SetName();
            pcbuilder.SetPrice();
            return pcbuilder.GetPC();
        }
    }

    class Client
    {
        public static void Main()
        {
            Director d = new Director();
            d.GiveMePC().Show();
            d.GiveMeTV().Show();
            Console.Read();
        }
    }
}

设计模式---建造者（Builder）模式，有关系图

发表于 Disqus： 本文字数： 961 阅读时长 ≈ 1 分钟 
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using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Facade
    {
        private Func1 field1;
        private Func2 field2;

        public Facade()
        {
            field1 = new Func1();
            field2 = new Func2();
        }

        public void Method()
        {
            field1.Method();
            field1.Method1();
            field2.Method();
        }

        public void Method1()
        {
            field2.Method();
            field2.Method1();
            field1.Method();
        }
    }

    class Func1
    {
        public void Method()
        {
            Console.WriteLine("功能类1的方法1");
        }

        public void Method1()
        {
            Console.WriteLine("功能类1的方法2");
        }
    }

    internal class Func2
    {
        public void Method()
        {
            Console.WriteLine("功能类2的方法1");
        }

        public void Method1()
        {
            Console.WriteLine("功能类2的方法2");
        }
    }

    class Client
    {
        public static void Main()
        {
            Facade f = new Facade();
            f.Method();
            f.Method1();
            Console.Read();
        }
    }
}

发表于 Disqus： 本文字数： 729 阅读时长 ≈ 1 分钟

设计模式--模板方法模式（照旧，有类关系图）

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

namespace ConsoleApplication1
{
    public class TheFather
    {
        public void BaseMethod1()
        {
            Console.WriteLine("吃了吗？");
            BaseMethod2();
        }

        public virtual void BaseMethod2()
        {
        }
    }

    public class Son1 : TheFather
    {
        public override void BaseMethod2()
        {
            Console.WriteLine("吃了");
        }
    }

    public class Son2 : TheFather
    {
        public override void BaseMethod2()
        {
            Console.WriteLine("还没呢");
        }
    }

    public class Client
    {
        public static void Main()
        {
            TheFather obj = new Son1();
            obj.BaseMethod1();

            obj = new Son2();
            obj.BaseMethod1();

            Console.Read();
        }
    }
}