How do calculate execution actual time using stopwatch in c#?

Question

I tried the following code in a method:

Trace.Write("START "+Datetime.now);
//DATABASE METHOD CALL 
SaveData();
Trace.Write("END "+Datetime.now);

And I calculate the time in output window manually.

How do I use stopwatch (start/reset/stop) to get the correct execution time?

You mean you don't know how to instantiate a class and invoke its methods? Your profile says you are experienced with c# — MikeSW, Apr 23 '14 at 15:22
This is an obvious case of RTFM. http://msdn.microsoft.com/en-us/library/system.diagnostics.stopwatch.aspx — tnw, Apr 23 '14 at 15:22
Try this: http://stackoverflow.com/questions/14019510/calculate-the-execution-time-of-a-method — Lex Webb, Apr 23 '14 at 15:23
Wow... for a user with fairly decent rep this is just appalling... A very simple Google search would have yielded many results for this. And then you go and mark your own question as a duplicate. — Evan L, Apr 23 '14 at 15:40

score 6 · Accepted Answer · answered Apr 23 '14 at 15:21

Create an instance of Stopwatch by Stopwatch.StartNew, execute your method. Stop the Stopwatch and then get ElapsedMilliseconds like:

Stopwatch stopwatch = Stopwatch.StartNew();
SaveData();
stopwatch.Stop();
Trace.Write("Time in Millisecond:  " + stopwatch.ElapsedMilliseconds);

Remember to include using System.Diagnostics;

score 2 · Answer 2 · answered Apr 23 '14 at 15:21

Use the Stopwatch class:

    // Create new stopwatch
    Stopwatch stopwatch = new Stopwatch();

    // Begin timing
    stopwatch.Start();

    // Do something
    for (int i = 0; i < 1000; i++)
    {
        Thread.Sleep(1);
    }

    // Stop timing
    stopwatch.Stop();

    // Write result
    Console.WriteLine("Time elapsed: {0}",
        stopwatch.Elapsed);

score 2 · Answer 3 · answered Apr 23 '14 at 15:22

2

As per msdn:

Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
Thread.Sleep(10000);
stopWatch.Stop();
// Get the elapsed time as a TimeSpan value.
TimeSpan ts = stopWatch.Elapsed;

StopWatch

answered Apr 23 '14 at 15:22

Ric

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How do calculate execution actual time using stopwatch in c#?

3 Answers3