Stopwatch运行时间 Parallel并行任务

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp2
{
    class Program
    {

        static void Main(string[] args)
        {
            //Stopwatch用于记录代码运行时间
            Stopwatch watch1 = new Stopwatch();
            watch1.Start();
            for (int i = ; i <= ; i++)
            {
                Console.WriteLine(i );
                Thread.Sleep();
            }
            watch1.Stop();
            Console.WriteLine(watch1.Elapsed);

            Stopwatch watch2 = new Stopwatch();
            watch2.Start();

            //会调用线程池中的线程
            Parallel.For(, , i =>
            {
                Console.WriteLine(i + ",线程ID:" + Thread.CurrentThread.ManagedThreadId);
                //Thread.Sleep(1000);
            });
            watch2.Stop();
            Console.WriteLine(watch2.Elapsed);
        }

    }

}