C#客户端实现多线程运行

using System;
using System.Threading;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            bool success = false;
            for (; ; ) {
                string state = "this is a state.";
                ThreadPool.QueueUserWorkItem((tmp)=> {
                    Console.WriteLine($"线程id: {Thread.CurrentThread.ManagedThreadId}");
                    Thread.Sleep(TimeSpan.FromSeconds(1));
                    if (Thread.CurrentThread.ManagedThreadId == 4) {
                        success = true;
                    }
                }, state);
                if (success) {
                    break;
                }
            }
            Console.WriteLine("程序运行结束！");
            Console.ReadKey();
        }
    }
}