thread.Join(); 让主线程等待自己完成

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace ConsoleApplication1
{
    class Program
    {
        private static void Method()
        {
            Thread.Sleep(5000);
            Console.WriteLine("当前线程：" + Thread.CurrentThread.Name);
        }

        static void Main(string[] args)
        {
            Thread.CurrentThread.Name = "MainThread";

            Thread thread = new Thread(Method);
            thread.Name = "Thread";
            thread.Start();
            //会阻止主线程，直到thread线程终结（线程方法返回或线程遇到异常）
            //输出：当前线程：Thread
            //      主线程：MainThread
            //可以注销此句对比输出结果
            thread.Join();

            Console.WriteLine("主线程：" + Thread.CurrentThread.Name);

            Console.Read();
        }
    }
}