C#¼òµ¥Ê¹ÓÃÏ̳߳Ø

static void Main(string[] args)
{
ThreadPool.QueueUserWorkItem(ThreadWork, "t1");
ThreadPool.QueueUserWorkItem(ThreadWork, "t2");
ThreadPool.QueueUserWorkItem(ThreadWork, "t3");
ThreadPool.QueueUserWorkItem(ThreadWork, "t4");
Console.ReadLine();
}
public static void ThreadWork(object state)
{
Console.WriteLine("Ïß³Ì{0}¿ªÊ¼Ö´ÐС­¡­ ", (string)state);
Thread.Sleep(10000);
Console.WriteLine("Ïß³Ì{0}ÔËÐнáÊø¡­¡­ ", (string)state);

}

µÈ´ýËùÓÐÏß³ÌÖ´ÐÐÍê³ÉÔÙ¼ÌÐøÖ´ÐÐ：
private static ManualResetEvent[] mres = null;
static void Main(string[] args)
{
mres = new ManualResetEvent[4];
for (int i = 1; i < 5; i++)
{
mres[i - 1] = new ManualResetEvent(false);
ThreadPool.QueueUserWorkItem(ThreadWork, mres[i-1]);
}
WaitHandle.WaitAll(mres);
Console.WriteLine("Ï̶߳¼ÒѾ­Ö´ÐÐÍê³É¡£¡£¡£");


Console.ReadLine();
}
public static void ThreadWork(object state)
{
Console.WriteLine("Ï߳̿ªÊ¼Ö´ÐС­¡­ ", "");
Thread.Sleep(10000);
Console.WriteLine("Ïß³ÌÔËÐнáÊø¡­¡­ ", "");
var re = state as ManualResetEvent;
re.Set();
}