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  • C# Thread IsBackground 前后台线程

    Thread 区别前后台线程属性IsBackground

    1、  创建一个线程默认是前台线程,即IsBackground=true

    2、  主线程的结束会关联前台线程,前台线程会阻止主进程的结束,需等待前台线程完成。

    3、  主进程结束时后台线程也会结束,即使没有执行完成也会被中断。

            static void Main(string[] args)
            {
                BackgroundTest shortTest = new BackgroundTest(50);
                Thread foregroundThread =
                    new Thread(new ThreadStart(shortTest.RunLoop));
                foregroundThread.Name = "ForegroundThread";
    
                BackgroundTest longTest = new BackgroundTest(100);
                Thread backgroundThread =
                    new Thread(new ThreadStart(longTest.RunLoop));
                backgroundThread.Name = "BackgroundThread";
                backgroundThread.IsBackground = true;
    
                foregroundThread.Start();
                backgroundThread.Start();
    
               Task.Factory.StartNew(() =>
                {
                    Thread.CurrentThread.Name = "Task Thread";
                    Thread.CurrentThread.IsBackground = false; //设置为前台线程
                    new BackgroundTest(50).RunLoop();
                });
    //回车结束主线程,如果有前台线程在运行是无法结束的,(后台线程就会被终止,不会执行完成)
                Console.ReadLine();
            }
    
            class BackgroundTest
            {
                int maxIterations;
    
                public BackgroundTest(int maxIterations)
                {
                    this.maxIterations = maxIterations;
                }
    
                public void RunLoop()
                {
                    String threadName = Thread.CurrentThread.Name;
    
                    for (int i = 0; i < maxIterations; i++)
                    {
                        Console.WriteLine("{0} count: {1}",
                            threadName, i.ToString());
                        Thread.Sleep(250);
                    }
                    Console.WriteLine("{0} finished counting.", threadName);
                }
            }
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  • 原文地址:https://www.cnblogs.com/tongyi/p/13575841.html
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