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();
}
}
}