如何测量函数运行的时间? [英] How do I measure how long a function is running?

问题描述

我想看看一个函数运行了多长时间.所以我在我的表单上添加了一个计时器对象，然后我得到了这个代码:

I want to see how long a function is running. So I added a timer object on my form, and I came out with this code:

private int counter = 0;

// Inside button click I have:
timer = new Timer();
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
Result result = new Result();
result = new GeneticAlgorithms().TabuSearch(parametersTabu, functia);
timer.Stop();

还有:

private void timer_Tick(object sender, EventArgs e)
{
    counter++;
    btnTabuSearch.Text = counter.ToString();
}

但这不算什么.为什么?

But this is not counting anything. Why?

推荐答案

为了避免将来出现计时器问题，以下是正确的代码:

To avoid future problems with a timer, here is the right code:

timer = new Timer();
timer.Tick += new EventHandler(timer_Tick);
timer.Interval = 1; //set interval on 1 milliseconds
timer.Enabled = true; //start the timer
Result result = new Result();
result = new GeneticAlgorithms().TabuSearch(parametersTabu, functia);
timer.Enabled = false; //stop the timer

<小时>

private void timer_Tick(object sender, EventArgs e)
{
   counter++;
   btnTabuSearch.Text = counter.ToString();
}

但这是错误的方法.您必须使用 秒表 (System.Diagnostic) 类因为它是一个高分辨率计时器，而诊断这个词说明了一切.

But it's the wrong aproach. You must use the Stopwatch (System.Diagnostic) class because it's a High resolution timer and the word Diagnostic says everything.

试试这个:

Stopwatch timer = Stopwatch.StartNew();

Result result = new Result();
result = new GeneticAlgorithms().TabuSearch(parametersTabu, functia);

timer.Stop();  
TimeSpan timespan = timer.Elapsed;

btnTabuSearch.Text = String.Format("{0:00}:{1:00}:{2:00}", timespan.Minutes, timespan.Seconds, timespan.Milliseconds / 10);

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