• Delegate 示例


    //Program.cs

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

    namespace DelegateIsAll
    {
        class program
        {
            public static void CarNeedWash(object sender, CarEventArgs e)
            {
                Console.WriteLine("{0} wash {1}", sender, e.msg);
            }
            public static void CarNeedFix(object sender, CarEventArgs e)
            {
                Console.WriteLine("{0} fix {1}", sender, e.msg);
            }

            static void Main()
            {
                Car c1 = new Car(true, true);
                c1.NeedWash = new Car.CarEventHandler(CarNeedWash);
                c1.NeedFix = new Car.CarEventHandler(CarNeedFix);

                c1.checkCar();
                Console.ReadLine();
                //if(c1.dirty)
            }
        }
    }

    //namespace DelegateIsAll
    //{
    //    public delegate void DelegateSample(string msg);
    //    class program
    //    {
    //        static void CoutHehe(string msg)
    //        {
    //            Console.WriteLine(msg);
    //        }
    //        static void CoutHi(string msg)
    //        {
    //            Console.WriteLine(msg);
    //        }
    //        static void Main()
    //        {
    //            DelegateSample d1 = new DelegateSample(CoutHehe);
    //            DelegateSample d2 = new DelegateSample(CoutHi);

    //            d1("Hehe...");
    //            d2("Hi...");
    //            //d1.Invoke("He he ...");
    //            //d2.Invoke("Hi....");
    //            Console.ReadLine();
    //        }
    //    }
    //}
    //namespace DelegateIsAll
    //{
    //    public delegate void GenericDelegate<T>(T arg);
    //    class program
    //    {
    //        static void StringSample(string arg)
    //        {
    //            Console.WriteLine("arg in Upper is: {0}", arg.ToUpper());
    //        }
    //        static void IntSample(int arg)
    //        {
    //            Console.WriteLine("++arg is: {0}", ++arg);
    //        }
    //        static void Main()
    //        {
    //            GenericDelegate<string> strTarget = new GenericDelegate<string>(StringSample);
    //            strTarget("good good study, day day up");

    //            GenericDelegate<int> intTarget = new GenericDelegate<int>(IntSample);
    //            intTarget(7);

    //            Console.ReadLine();
    //        }

    //    }
    //}
    //namespace DelegateIsAll
    //{
    //    public class Garage
    //    {
    //        private List<Car> theCars = new List<Car>();
    //        public Garage()
    //        {
    //            theCars.Add(new Car("A", true, false));
    //            theCars.Add(new Car("B", false,false));
    //            theCars.Add(new Car("C", false, true));
    //        }
    //        public void ProcessCar(Car.MaintainDelegate proc)
    //        {
    //            foreach (Car c in theCars)
    //            {
    //                proc(c);
    //            }
    //        }
    //    }
    //    public class ServiceDepartment
    //    {
    //        public void WashCar(Car c)
    //        {
    //            if (c.Dirty)
    //                Console.WriteLine("Please Wait for Washing....");
    //            else
    //                Console.WriteLine("Already clean...");
    //        }
    //        public void FixCar(Car c)
    //        {
    //            if (c.Broken)
    //                Console.WriteLine("Please Wait for Fixing...");
    //            else
    //                Console.WriteLine("Run well...");
    //        }
    //    }
    //    class Program
    //    {
    //        static void Main(string[] args)
    //        {
    //            Garage g = new Garage();
    //            ServiceDepartment sd = new ServiceDepartment();

    //            g.ProcessCar(sd.WashCar);

    //            g.ProcessCar(sd.FixCar);

    //            Console.ReadLine();
    //        }
    //    }
    //}
    //namespace DelegateIsAll
    //{
    //    class Program
    //    {
    //        static void Main(string[] args)
    //        {
    //            Car c1 = new Car("Nini", 100, 10);

    //            Car.Exploded d = new Car.Exploded(CarExploded);
    //            Car.AboutToBlow a1 = new Car.AboutToBlow(CarAboutTo);
    //            Car.AboutToBlow a2 = new Car.AboutToBlow(CarIsAlmost);
    //            //c1.OnAboutToBlow(new Car.AboutToBlow(CarIsAlmost));
    //            //c1.OnAboutToBlow(new Car.AboutToBlow(CarAboutTo));
    //            c1.OnAboutToBlow(a1);
    //            c1.OnAboutToBlow(a2);
    //            c1.OnExploded(d);

    //            Console.WriteLine("speedUp...");
    //            for (int i = 0; i < 6;i++ )
    //            {
    //                c1.Accelerate(20);
    //            }
    //            c1.RemoveExploded(d);
    //            Console.ReadLine();
    //        }
    //        public static void CarAboutTo(string msg)
    //        {
    //            Console.WriteLine(msg);
    //        }
    //        public static void CarIsAlmost(string msg)
    //        {
    //            Console.WriteLine("message from car: {0}",msg);
    //        }
    //        public static void CarExploded(string msg)
    //        {
    //            Console.WriteLine(msg);
    //        }
    //    }
    //}

    //namespace DelegateIsAll
    //{
    //    public delegate int BinOp(int x, int y);
    //    public class SimpleMath
    //    {
    ////      public static int Add(int x, int y)
    //        public  int Add(int x, int y)
    //        {
    //            return x + y;
    //        }
    ////      public static int Subtract(int x, int y)
    //        public  int Subtract(int x, int y)
    //        {
    //            return x - y;
    //        }
    //    }
    //    class Program
    //    {
    //        static void DisplayDelegateInfo(Delegate delObj)
    //        {
    //            foreach (Delegate d in delObj.GetInvocationList())
    //            {
    //                Console.WriteLine("Method name: {0}", d.Method);
    //                Console.WriteLine("Type name: {0}", d.Target);
    //            }
    //        }
    //        static void Main(string[] args)
    //        {
    ////            BinOp b = new BinOp(SimpleMath.Add);
    //            SimpleMath m = new SimpleMath();
    //            BinOp b = new BinOp(m.Add);

    //            DisplayDelegateInfo(b);
    //            Console.WriteLine("10 + 10 is {0}", b(10, 10));
    //            Console.ReadLine();
    //        }
    //    }
    //}

    //CarType.cs

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


    namespace DelegateIsAll
    {
        public class CarEventArgs:EventArgs
        {
            public readonly string msg;
            public CarEventArgs(string message)
            {
                msg = message;
            }
        }

        public class Car
        {
            public delegate void CarEventHandler(object sender, CarEventArgs e);
            public CarEventHandler NeedWash;
            public CarEventHandler NeedFix;

            private bool bNeedWash, bNeedFix;
            public bool dirty
            {
                get { return bNeedWash; }
                set { bNeedWash = value; }
            }
            public bool broken
            {
                get { return bNeedFix; }
                set { bNeedFix = value; }
            }
            public Car(bool bw, bool bf)
            {
                bNeedWash = bw;
                bNeedFix = bf;
            }
            public void checkCar()
            {
                if (bNeedWash)
                    NeedWash(this, new CarEventArgs("please washing...."));
                else
                    NeedWash(this, new CarEventArgs("already clean..."));
                if (bNeedFix)
                    NeedFix(this, new CarEventArgs("please fixing..."));
                else
                    NeedFix(this, new CarEventArgs("run good..."));
            }

        }
    }
    //namespace DelegateIsAll
    //{
    //    public class Car
    //    {
    //        public delegate void MaintainDelegate(Car c);
    //        private string name;
    //        private bool bNeedWash, bNeedFix;
    //        public bool Dirty
    //        {
    //            get { return bNeedWash; }
    //            set { bNeedWash = value; }
    //        }
    //        public bool Broken
    //        {
    //            get { return bNeedFix; }
    //            set { bNeedFix = value; }
    //        }
    //        public Car()
    //        {
    //            name = "bird";
    //        }
    //        public Car(string pet, bool bW, bool bF)
    //        {
    //            name = pet;
    //            bNeedWash = bW;
    //            bNeedFix = bF;
    //        }

    //    }
    //}

    //namespace DelegateIsAll
    //{
    //    public class Car
    //    {
    //        public delegate void AboutToBlow(string msg);
    //        public delegate void Exploded(string msg);

    //        private AboutToBlow almostDeadList;
    //        private Exploded explodedList;

    //        public void OnAboutToBlow(AboutToBlow clientMethod)
    //        { almostDeadList += clientMethod; }
    //        public void OnExploded(Exploded clientMethod)
    //        { explodedList += clientMethod; }

    //        public void RemoveAboutToBlow(AboutToBlow clientMethod)
    //        { almostDeadList -= clientMethod; }
    //        public void RemoveExploded(Exploded clientMethod)
    //        { explodedList -= clientMethod; }

    //        public class Radio
    //        {
    //            public void TurnOn(bool on)
    //            {
    //                if (on)
    //                    Console.WriteLine("Jamming...");
    //                else
    //                    Console.WriteLine("Quiet time...");
    //            }
    //        }
    //        private int currSpeed;
    //        private int maxSpeed;
    //        private string petName;

    //        bool carIsDead;
    //        private Radio theMusicBox = new Radio();

    //        public Car()
    //        {
    //            maxSpeed = 100;
    //        }
    //        public Car(string name, int max, int cur)
    //        {
    //            currSpeed = cur;
    //            maxSpeed = max;
    //            petName = name;
    //        }
    //        public void CrankTunes(bool state)
    //        {
    //            theMusicBox.TurnOn(state);
    //        }

    //        public void Accelerate(int delta)
    //        {
    //            if (carIsDead)
    //            {
    //                if (explodedList != null)
    //                    explodedList("sorry, the car is dead...");
    //            }
    //            else
    //            {
    //                currSpeed += delta;

    //                if (10 == maxSpeed - currSpeed
    //                    && almostDeadList != null)
    //                    almostDeadList("Careful ! gonna blow...");
    //                if (currSpeed >= maxSpeed)
    //                    carIsDead = true;
    //                else
    //                    Console.WriteLine("->CurSpeed = {0}", currSpeed);
    //            }
    //        }

    //    }
    //}

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  • 原文地址:https://www.cnblogs.com/MayGarden/p/1494394.html
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