探秘System.Threading系列 第二篇：还是Thread，Thread.Start 和 Thread.Join

1. 开始一个Thread
开始一个Thread很简单，声明一个Thread实例，然后调用Start方法即可

Code
class IsThreadPool
{
static void Main()
{
AutoResetEvent autoEvent = new AutoResetEvent(false);

Thread threadA =
new Thread(new ThreadStart(ThreadMethod));

Thread threadB = new Thread(new ParameterizedThreadStart(WorkMethod));

threadA.Start();

// Wait for foreground thread to end.
threadA.Join();
threadB.Start(autoEvent);

// Wait for background thread to end.
autoEvent.WaitOne();

Console.Read();
}

static void ThreadMethod()
{
Console.WriteLine("ThreadOne, executing ThreadMethod, " +
"is {0}from the thread pool.",
Thread.CurrentThread.IsThreadPoolThread ? "" : "not ");
}

static void WorkMethod(object stateInfo)
{
Console.WriteLine("ThreadTwo, executing WorkMethod, " +
"is {0}from the thread pool.",
Thread.CurrentThread.IsThreadPoolThread ? "" : "not ");
// Signal that this thread is finished.
((AutoResetEvent)stateInfo).Set();
}
}
不知道什么原因，上面的代码中threadA并没有被阻塞，难道是只能阻塞放在ThreadPool中执行的线程？没有道理，我反复做了实验都没有成功，把这个结果贴出来，请大家释疑。