Question

我一直在研究一些代码。我有一个问题：

什么是“线程”和“多线程”在C＃中意味着什么？线程的作用是什么？

Answer 1

线程是在进程上下文中执行的一系列指令。当程序使用多个执行线程允许每个线程根据分配给这些线程的优先级并发共享CPU时，实现MultiThreading。

您可以参考此代码学习线程

using System;
using System.Threading;

public class Alpha
{

   // This method that will be called when the thread is started
   public void Beta()
   {
      while (true)
      {
         Console.WriteLine("Alpha.Beta is running in its own thread.");
      }
   }
};

public class Simple
{
   public static int Main()
   {
      Console.WriteLine("Thread Start/Stop/Join Sample");

      Alpha oAlpha = new Alpha();

      // Create the thread object, passing in the Alpha.Beta method
      // via a ThreadStart delegate. This does not start the thread.
      Thread oThread = new Thread(new ThreadStart(oAlpha.Beta));

      // Start the thread
      oThread.Start();

      // Spin for a while waiting for the started thread to become
      // alive:
      while (!oThread.IsAlive);

      // Put the Main thread to sleep for 1 millisecond to allow oThread
      // to do some work:
      Thread.Sleep(1);

      // Request that oThread be stopped
      oThread.Abort();

      // Wait until oThread finishes. Join also has overloads
      // that take a millisecond interval or a TimeSpan object.
      oThread.Join();

      Console.WriteLine();
      Console.WriteLine("Alpha.Beta has finished");

      try 
      {
         Console.WriteLine("Try to restart the Alpha.Beta thread");
         oThread.Start();
      }
      catch (ThreadStateException) 
      {
         Console.Write("ThreadStateException trying to restart Alpha.Beta. ");
         Console.WriteLine("Expected since aborted threads cannot be restarted.");
      }
      return 0;
   }
}

Answer 2

查看这些文章Introduction to Threads in C#或How to: Create and Terminate Threads

C＃：Thread和Multi Thread的概念

2 个答案: