using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;//线程 using System.Threading;//引用线程方法 namespace ConsoleApplication2 { class Program { static void Main(string[] args) { //委托详解 //Func返回带参数类型的委托方法且当方法含有多个参数时需要调用泛型<参数1，参数2……等等，最后加上返回值参数> //Action返回不带参数类型的委托方法且当方法含有多个参数时与一样Func一样需要调用泛型<参数1，参数2……等等> //var func = new Func<int,int,int>(Add); //int sc = func(3,4); //Console.WriteLine("{0}++", sc); //var action = new Action<double,int>(Getround); //Console.WriteLine("{0}",action); //action.Invoke(3.14,5); //ProductFactory productFactory = new ProductFactory(); //WrapFactory warpFact = new WrapFactory(); ////定义委托去获得产品的名称 //Func<Product> Product1 = new Func<Product>(productFactory.Father);//返回Product的类型的产品名称 //Func<Product> Product2 = new Func<Product>(productFactory.Mother);//模板方法 //logger newlog=new logger(); ////action委托将事件记录器当做参数去记录 //Action<Product> log = new Action<Product>(newlog.Logger);//回调方法 ////将委托得到名称产品复制到box的产品信息中 //Box box1 = warpFact.WrapProduct(Product1,log);//工厂包装以这个产品名称的产品两个参数 //Box box2 = warpFact.WrapProduct(Product2,log); //Console.WriteLine(box1.Product.Name); //Console.WriteLine(box2.Product.Name); //lambda表达式应用 //(x, y) => { return x + y; }lambda表达式 //Dosomething<int>((int x,int y)=>{return x+y;},3,4);//完整版本 //Dosomething((x, y) => { return x + y; }, 3, 4);//简化版本因为泛型委托当中含有类型推断所以直接省略了一部分int //多线程: //Student stu1 = new Student() { ID = 1,Pencolor=ConsoleColor.Yellow}; //Student stu2 = new Student() { ID = 2, Pencolor = ConsoleColor.Green }; //Student stu3 = new Student() { ID = 3, Pencolor = ConsoleColor.Red }; //stu1.DoHomework(); //stu2.DoHomework(); //stu3.DoHomework(); //直接同步调用 //Action action1 = new Action(stu1.DoHomework); //Action action2 = new Action(stu2.DoHomework); //Action action3 = new Action(stu3.DoHomework);//定义委托 //action1.Invoke(); //action2.Invoke(); //action3.Invoke();//间接同步调用 //action1+=action2; //action1+=action3; //action1.Invoke();//多播委托-间接同步调用 //Thread thread1 = new Thread(new ThreadStart(stu1.DoHomework)); //Thread thread2 = new Thread(new ThreadStart(stu2.DoHomework)); //Thread thread3 = new Thread(new ThreadStart(stu3.DoHomework)); //thread1.Start(); //thread2.Start(); //thread3.Start();//显式异步调用 //Task task1 = new Task(new Action(stu1.DoHomework)); //Task task2 = new Task(new Action(stu2.DoHomework)); //Task task3 = new Task(new Action(stu3.DoHomework)); //task1.Start(); //task2.Start(); //task3.Start();//显式异步委托调用 //action1.BeginInvoke(null,null); //action2.BeginInvoke(null,null); //action3.BeginInvoke(null,null);//隐式异步委托调用 //for (int i = 0; i < 10; i++) //{ // Console.ForegroundColor = ConsoleColor.Cyan; // Console.WriteLine("Main thread:{0}", i); // Thread.Sleep(500); //} } //static int Add(int x, int y) { // int s = 0; // s = x + y; // Console.WriteLine("{0}",s); // return s; //} //static void Getround(double x,int y) { // for (int i = 0; i < y; i++) // { // Console.WriteLine("{0}",x); // } //} static void Dosomething<T>(Func<T,T,T> func,T x,T y) { T res=func(x,y); Console.WriteLine(res); } } class Student { //public int ID { get; set; }//字段声明构造器 //public ConsoleColor Pencolor { get; set; } //public void DoHomework() //{ // for(int i=1;i<=5;i++) // { // Console.ForegroundColor = this.Pencolor; // Console.WriteLine("学生ID:{0},做了{1}小时作业",this.ID,i); // Thread.Sleep(500); // } //} } //class logger // //记录事件触发的情况 //{ // public void Logger(Product prot) // { // Console.WriteLine("产平名称:{0},产品价格:{1},生产日期:{2}",prot.Name,prot.Price,DateTime.UtcNow); // } //} //class Box //{ // //包装产品信息 字段 // public Product Product // { // get; // set; // } //} //class Product //{ // //生产产品名称 字段 // public string Name // { // get; // set; // } // public double Price // { // get; // set; // } //} //class WrapFactory //{ // //包装工厂 // //实际就是一个方法 // public Box WrapProduct(Func<Product> getProduct, Action<Product> log)//定义了一个产品类型的委托 // { // Box box = new Box(); // Product Product = getProduct.Invoke();//将产品从委托的invoke方法当中获得 // if (Product.Price >= 50) // { // log(Product); // } // box.Product = Product;//将产品赋值为box的产品信息使得box有了产品 // return box;//返回该产品 // } //} //class ProductFactory //{ // //需要生产的产品1 // public Product Mother() // { // Product Prot = new Product(); // Prot.Name = "士力架"; // Prot.Price = 78; // return Prot; // } // //需要生产的产品2 // public Product Father() // { // Product Prot = new Product(); // Prot.Name = "牙膏"; // Prot.Price = 12.5; // return Prot; // } //} }
请复制代码后操作，谢谢，此处推荐刘铁锰老师的视频 https://www.bilibili.com/video/av7606481/?p=23 希望能和大家一起进步