我主要按照你的方式尝试了它，花了39秒。当然，我不知道你的秒表课程的内容，但是当我打电话给我的 ElapsedTime $ c时，我所做的就是返回 TimeSpan $ c>方法。我也只使用 string.Concat 结束值只调用 Console.Writeline 。





I tried it mostly your way and it took 39 seconds. Granted, I don't know the contents of your Stopwatch class, but all mine does is return a TimeSpan when I call my ElapsedTime method. I'm also making only one call to Console.Writeline with a string.Concatendated value.

public class StopWatch
{
    public DateTime StartTime { get; set; }

    public void Start()
    {
        this.StartTime = DateTime.Now;
    }

    public TimeSpan ElapsedTime()
    {
        return (DateTime.Now - this.StartTime);
    }
}

static void Main(string[] args)
{
    string str = Console.ReadLine();

    if (str == "start")
    {
        StopWatch sw = new StopWatch();
        sw.Start();
        for (int i = 1; i < 200000; i++)
        {
            Console.WriteLine(string.Concat("Acccessed Value: ", i.ToString(), ", Time: ", sw.ElapsedTime().ToString()));
        }
    }
    Console.Read();
}

出于好奇，我尝试了运行单个应用程序的多线程方法。这也是47秒。

Out of curiosity, I tried a multi-threaded approach running a single app. This too 47 seconds.

static void Main(string[] args)
{
    string str = Console.ReadLine();

    if (str == "start")
    {
        StopWatch sw = new StopWatch();
        sw.Start();
        Parallel.Invoke(()=>
        {
            for (int i = 1; i < 200000; i++)
            {
                Console.WriteLine(string.Concat("Thread 1, Acccessed Value: ", i.ToString(), ", Time: ", sw.ElapsedTime().ToString()));
            }
        },
        ()=>
        {
            for (int i = 1; i < 200000; i++)
            {
                Console.WriteLine(string.Concat("Thread 2, Acccessed Value: ", i.ToString(), ", Time: ", sw.ElapsedTime().ToString()));
            }
        });
    }
    Console.Read();
}

最后，我想知道共享相同的秒表是否会导致某种自我延迟，所以我做了这个，导致大约49秒的时间流逝。

And finally, I wondered if sharing the same stopwatch might be causing some sort of self-induced delays, so I did this, which resulted in about 49 seconds of elapsed timed.

static void Main(string[] args)
{
    string str = Console.ReadLine();

    if (str == "start")
    {
        StopWatch sw = new StopWatch();
        sw.Start();
        Parallel.Invoke(()=>RunTask(1), ()=>RunTask(2));
    }
    Console.Read();
}

private static void RunTask(int taskno)
{
    StopWatch sw = new StopWatch();
    sw.Start();
    string taskNumber = taskno.ToString();
    for (int i = 1; i < 200000; i++)
    {
        Console.WriteLine(string.Concat("Thread ", taskNumber," , Acccessed Value: ", i.ToString(), ", Time: ", sw.ElapsedTime().ToString()));
    }
}