多线程，如何判断所有子线程都已经运行完毕（结束）

Question

If t.ThreadState = ThreadState.Stopped Then
    '完成
EndIf

Answer 1

that's not a bad question!

Answer 2

myThread mThread = new myThread();
            try
            {
                Console.Title = "博客搬家后台服务 --Sean Pu 2007.08.23)";
                Parse.Cl("博客搬家后台服务开始运行...", ConsoleColor.DarkGreen);
                mThread.MainThread();  //Start MainThread and MainThread start some child threads              
                XXX
                mThread.TerminateThread();//terminate child threads
                Parse.Cl("现在开始停止所有服务,请稍等片刻....");
                while (myThread.ThreadNum != 0)
                {
                    System.Threading.Thread.Sleep(100);
                }
                Console.Beep();
                Parse.Cl("博客搬家后台服务停止完成.");
                Parse.Cl("Press any key to continue... ...");
                Console.ReadKey();
            }

Answer 3

我是在类中设一个Dictionary然后在线程函数中写状态进Dictionary在主函数中读都是某状态就OK 了

Answer 4

采用WaitHandle等待所有线程执行完毕!using System;
using System.Threading;public sealed class App 
{
    // Define an array with two AutoResetEvent WaitHandles.
    static WaitHandle[] waitHandles = new WaitHandle[] 
    {
        new AutoResetEvent(false),
        new AutoResetEvent(false)
    };    // Define a random number generator for testing.
    static Random r = new Random();    static void Main() 
    {
        
        DateTime dt = DateTime.Now;
        Console.WriteLine("Main thread is waiting for BOTH tasks to complete.");
        ThreadPool.QueueUserWorkItem(new WaitCallback(DoTask), waitHandles[0]);
        ThreadPool.QueueUserWorkItem(new WaitCallback(DoTask), waitHandles[1]);
        WaitHandle.WaitAll(waitHandles);
        
        Console.WriteLine("Both tasks are completed (time waited={0})", 
            (DateTime.Now - dt).TotalMilliseconds);        // Queue up two tasks on two different threads; 
        // wait until any tasks are completed.
        dt = DateTime.Now;
        Console.WriteLine();
        Console.WriteLine("The main thread is waiting for either task to complete.");
        ThreadPool.QueueUserWorkItem(new WaitCallback(DoTask), waitHandles[0]);
        ThreadPool.QueueUserWorkItem(new WaitCallback(DoTask), waitHandles[1]);
        int index = WaitHandle.WaitAny(waitHandles);
        // The time shown below should match the shortest task.
        Console.WriteLine("Task {0} finished first (time waited={1}).",
            index + 1, (DateTime.Now - dt).TotalMilliseconds);
    }    static void DoTask(Object state) 
    {
        AutoResetEvent are = (AutoResetEvent) state;
        int time = 1000 * r.Next(2, 10);
        Console.WriteLine("Performing a task for {0} milliseconds.", time);
        Thread.Sleep(time);
        are.Set();
    }
}

Answer 5

          CheckIp *checkrun[10];
          for (int j=0;j<10 && !q1->Eof;j++)
          {
               MainForm->Memo2->Lines->Add(DateTimeToStr(Date()+Time())+" 检测 "+q1->FieldByName("ip")->AsString);
               //MainForm->Label3->Caption=IntToStr(MainForm->Label3->Caption.ToInt()+1);
               checkrun[j]=new CheckIp(false);
               checkrun[j]->FreeOnTerminate=false;
               checkrun[j]->ip=q1->FieldByName("ip")->AsString;
               checkrun[j]->port=q1->FieldByName("port")->AsString.ToInt();
               checkrun[j]->Resume();
               q1->MoveBy(1);
          }
          for (;checkrun[0]->islive || checkrun[1]->islive || checkrun[2]->islive || checkrun[3]->islive || checkrun[4]->islive || checkrun[5]->islive || checkrun[6]->islive || checkrun[7]->islive || checkrun[8]->islive || checkrun[9]->islive;)
               Sleep(1000);
          delete  checkrun;
__fastcall CheckIp::CheckIp(bool CreateSuspended)
        : TThread(CreateSuspended)
{
        islive=true;
}
//---------------------------------------------------------------------------
void __fastcall CheckIp::Execute()
{
        //---- Place thread code here ----
        //我的程序代码.....
        islive=false;
        return;
}