class Program

{

static void Main(string[] args)

{

ThreadStart num = new ThreadStart(PrintNum);

Thread ConstrolNum = new Thread(num);

ThreadStart str = new ThreadStart(PrintStr);

Thread ConstrolStr = new Thread(str);

Stopwatch watch = new Stopwatch();

watch.Start();

ConstrolNum.Start();

ConstrolStr.Start();

while (true)

{

if (ConstrolNum.ThreadState == System.Threading.ThreadState.Stopped && ConstrolStr.ThreadState == System.Threading.ThreadState.Stopped)

{

watch.Stop();

Console.WriteLine(watch.Elapsed.TotalMilliseconds);

break;

}

}

Console.ReadKey();

}

private static void PrintNum()

{

for (int i = 1; i < 1000; i++)

{

Console.WriteLine(i);

}

}

private static void PrintStr()

{

for (int i = 1; i < 1000; i++)

{

Console.WriteLine("当前数为:{0}", i);

}

}

}