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 = 1; i <= 10; i++)            {                Console.WriteLine(i );                Thread.Sleep(1000);            }            watch1.Stop();            Console.WriteLine(watch1.Elapsed);            Stopwatch watch2 = new Stopwatch();            watch2.Start();            //会调用线程池中的线程            Parallel.For(1, 11, i =>            {                Console.WriteLine(i + ",线程ID:" + Thread.CurrentThread.ManagedThreadId);                //Thread.Sleep(1000);            });            watch2.Stop();            Console.WriteLine(watch2.Elapsed);        }          }}