[RESOLVED] Measure time it takes to execute a function

[Tomexx]

In VB6 I used GetTickCount() Windows API. Is there a fuction in c# that will allow me to measure the time it takes to execute a piece of code?

[Kasracer]

In 2005/2008 use StopWatch. In 2002/2003 you can either write your own class that uses the QueryPerformanceCounter API or search Google and grab someone else's.

[Tomexx]

Found this and it works:

/* Read the initial time. */
DateTime startTime = DateTime.Now;


/* Here's the code you're trying to measure */


/* Read the end time. */
DateTime stopTime = DateTime.Now;

/* Compute the duration between the initial and the end time. */
TimeSpan duration = stopTime - startTime;
this.Text = duration.TotalMilliseconds.ToString();

[Kasracer]

Fyi, while that works, it's horribly inaccurate compared to the System.Diagnostics.StopWatch or the QueryPerformance API.

[timeshifter]

Try something more like this:

using System.Diagnostics;
 
 
Stopwatch sw = new Stopwatch();
sw.Start();
 
//run the code to time
 
sw.Stop();
MessageBox.Show(sw.ElapsedTime.ToString());

There are a few other fun ways to get the elapsed time with a Stopwatch... my Breakout game is currently using ElapsedMilliseconds for a frame limiter. Fun stuff.