c#使用多线程并发之Thread

这篇文章主要介绍了c#使用多线程的几种方式,通过示例学习c#的多线程使用方式，大家参考使用吧

(1)不需要传递参数,也不需要返回参数
ThreadStart是一个委托，这个委托的定义为void ThreadStart()，没有参数与返回值。

class Program{static void Main(string[] args){for (int i = 0; i < 30; i++){ThreadStart threadStart = new ThreadStart(Calculate);Thread thread = new Thread(threadStart);thread.Start();}Thread.Sleep(2000);Console.Read();}public static void Calculate(){DateTime time = DateTime.Now;//得到当前时间Random ra = new Random();//随机数对象Thread.Sleep(ra.Next(10,100));//随机休眠一段时间Console.WriteLine(time.Minute + ":" + time.Millisecond);}}

(2)需要传递单个参数
ParameterThreadStart委托定义为void ParameterizedThreadStart(object state)，有一个参数但是没有返回值。

class Program{static void Main(string[] args){for (int i = 0; i < 30; i++){ParameterizedThreadStart tStart = new ParameterizedThreadStart(Calculate);Thread thread = new Thread(tStart);thread.Start(i*10+10);//传递参数}Thread.Sleep(2000);Console.Read();}public static void Calculate(object arg){Random ra = new Random();//随机数对象Thread.Sleep(ra.Next(10, 100));//随机休眠一段时间Console.WriteLine(arg);}}

(3)使用专门的线程类(常用)
使用线程类可以有多个参数与多个返回值，十分灵活！

class Program{static void Main(string[] args){MyThread mt = new MyThread(100);ThreadStart threadStart = new ThreadStart(mt.Calculate);Thread thread = new Thread(threadStart);thread.Start();   //等待线程结束while (thread.ThreadState != ThreadState.Stopped){Thread.Sleep(10);}Console.WriteLine(mt.Result);//打印返回值Console.Read();}}public class MyThread//线程类{public int Parame { set; get; }//参数public int Result { set; get; }//返回值//构造函数public MyThread(int parame){this.Parame = parame;}//线程执行方法public void Calculate(){Random ra = new Random();//随机数对象Thread.Sleep(ra.Next(10, 100));//随机休眠一段时间Console.WriteLine(this.Parame);this.Result = this.Parame * ra.Next(10, 100);}}

(4)使用匿名方法(常用)
使用匿名方法启动线程可以有多个参数和返回值，而且使用非常方便！

class Program{static void Main(string[] args){int Parame = 100;//当做参数int Result = 0;//当做返回值//匿名方法ThreadStart threadStart = new ThreadStart(delegate(){Random ra = new Random();//随机数对象Thread.Sleep(ra.Next(10, 100));//随机休眠一段时间Console.WriteLine(Parame);//输出参数Result = Parame * ra.Next(10, 100);//计算返回值});Thread thread = new Thread(threadStart);thread.Start();//多线程启动匿名方法//等待线程结束while (thread.ThreadState != ThreadState.Stopped){Thread.Sleep(10);}Console.WriteLine(Result);//打印返回值Console.Read();}}