一、用C#自带的StopWatch函数
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
namespace StopWatch
{
class Program
{
static void Main(string[] args)
{
Stopwatch sw = new Stopwatch();
sw.Start();
//这里填写要执行的代码
sw.Stop();
Console.WriteLine("总运行时间：" + sw.Elapsed);
Console.WriteLine("测量实例得出的总运行时间（毫秒为单位）：" + sw.ElapsedMilliseconds);
Console.WriteLine("总运行时间(计时器刻度标识)：" + sw.ElapsedTicks);
Console.WriteLine("计时器是否运行：" + sw.IsRunning.ToString());
}
}
}
运行结果如下：
总运行时间：00:00:00.0000013
测量实例得出的程序运行时间（毫秒为单位）：0
总运行时间(计时器刻度标识)：5
计时器是否运行：False
二、用API函数QueryPerformanceFrequency
using System;
using System.Threading;
class Class1
{
[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
static extern bool QueryPerformanceCounter(ref long count);
[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
static extern bool QueryPerformanceFrequency(ref long count);
[STAThread]
static void Main(string[] args)
{
long count = 0;
long count1 = 0;
long freq = 0;
double result = 0;
QueryPerformanceFrequency(ref freq);
QueryPerformanceCounter(ref count);
//需要测试的模块
int heisetoufa;
for (heisetoufa = 1; heisetoufa < 10000; heisetoufa++)
{
Console.WriteLine("第" + heisetoufa + "行");
if (heisetoufa == 5000)
{
Thread.Sleep(10000);
}
}
//需要测试的模块
QueryPerformanceCounter(ref count1);
count = count1 - count;
result = (double)(count) / (double)freq;
Console.WriteLine("耗时: {0} 秒", result);
Console.ReadLine();
}
}