C#记录执行毫秒--很不错 using System;using System.Runtime.InteropServices;using System.ComponentModel;using System.Threading; internal class HiPerfTimer { [DllImport("Kernel32.dll")] private static extern bool QueryPerformanceCounter( out long lpPerformanceCount); [DllImport("Kernel32.dll")] private static extern bool QueryPerformanceFrequency( out long lpFrequency); private long startTime, stopTime; private long freq; // Constructor public HiPerfTimer() { startTime = 0; stopTime = 0; if (QueryPerformanceFrequency(out freq) == false) { // high-performance counter not supported throw new Win32Exception(); } } // Start the timer public void Start() { // lets do the waiting threads there work Thread.Sleep(0); QueryPerformanceCounter(out startTime); } // Stop the timer public void Stop() { QueryPerformanceCounter(out stopTime); } // Returns the duration of the timer (in seconds) public double Duration { get { return (double)(stopTime - startTime) / (double) freq; } } } }
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