c# - 为什么在调试主线程时工作线程不执行？

Question

我创建了一个控制台测试应用程序，它在 2 个单独的线程上创建一个对象并调用 2 个函数。一个线程以相反的顺序打印 1-20 中的数字。

问题是在调试第一个工作线程时不会被触发，直到我不停止调试主线程(即我按 f5)。有答案吗？

class Program
 {
  static void Main(string[] args)
   {
     DisplayData dd = new DisplayData();

     ThreadStart ts1 = new ThreadStart(dd.DisplayNumber);
     Thread t1 = new Thread(ts1);
     t1.Name = "Display Numbers";

     ThreadStart ts2 = new ThreadStart(dd.ReverseNumbers);
     Thread t2 = new Thread(ts2);
     t2.Name = "Reverse Numbers";

     t1.Start(); //Keep 1st break point at this location. Then press F10.
     t2.Start(); //Keep break point at this location permanently
    }




public class DisplayData
   {
       public void DisplayNumber()
       {
          int length = 20;
          Console.WriteLine("\nNumbers in correct order.\n");


          for (int i = 0; i < length; i++)
          {

             Console.WriteLine("DN: The value of i is: " + (i+1) + " " + Thread.CurrentThread.ManagedThreadId + " " + Thread.CurrentThread.Name);
             //Thread.Sleep(1000);

          }
       }

       public void ReverseNumbers()
       {
          int length = 20;
          Console.WriteLine("\nNumbers in reverse order.\n");
          for (int i = 0; i < length; i++)
          {

             Console.WriteLine("RN: The value of i is: " + (length - i) + " " + Thread.CurrentThread.ManagedThreadId + " " + Thread.CurrentThread.Name);
             //Thread.Sleep(1000);
          }
       }

Answer 1

我不确定这是否是 Visual Studio 或 CLR 中的限制，但在一个线程上设置断点将停止所有线程。

如果您想暂停一个线程，您可以通过 Debug..Threads 窗口执行此操作，您可以在那里暂停和恢复线程。