class Program6
    {
        public static void ThreadProc()
        {
            for (int i = 0; i < 10; i++)
            {
                Console.WriteLine("ThreadProc: {0}", i);
                // Yield the rest of the time slice.
                Thread.Sleep(0);
            }
        }
        
 
static void Main(string[] args)
        {
            Console.WriteLine("Main thread: Start a second thread.");
            Thread t = new Thread(new ThreadStart(ThreadProc));
            t.Start();//子線程開始執行
            for (int i = 0; i < 4; i++)
            {
               
                Console.WriteLine(
 
"Main thread: Do some work.");
               // Console.WriteLine("Wait 1 second.");
                 Thread.Sleep(0);
            }
            Console.WriteLine("Main thread: Call Join(), to wait until ThreadProc ends.");
           
            t.Join(); //加這句話的意思是：先把子線程執行完，再執行本線程。
            Console.WriteLine("
 
Main thread: ThreadProc.Join has returned.  Press Enter to end program.");
            Console.ReadLine();
        }
    }

結果：

多線程（一）初步使用