C# 中，使用 System.Diagnostics.Stopwatch 计时

MesureTimeExample.cs

// https://msdn.microsoft.com/zh-cn/library/system.diagnostics.stopwatch(v=vs.110).aspx

using System;
using System.Diagnostics;
using System.Threading;
class Program
{
    static void Main(string[] args)
    {
        Stopwatch stopWatch = new Stopwatch();
        stopWatch.Start();
        Thread.Sleep(10000);  // sleep for 10 seconds
        stopWatch.Stop();
        // Get the elapsed time as a TimeSpan value.
        TimeSpan ts = stopWatch.Elapsed;

        // Format and display the TimeSpan value.
        string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",
            ts.Hours, ts.Minutes, ts.Seconds,
            ts.Milliseconds / 10);
        Console.WriteLine("RunTime " + elapsedTime);
        
        // Or format this way
        Console.WriteLine("RunTime " + ts.TotalMilliseconds + "ms");
    }
}