Problem in stopwatch,

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When I press the button, I call the timer'form:

VB.NET

StopWatch.Show()
'StopWatch.Timer1.Start()

When I'm finished, I'm stop the timer:

VB.NET

StopWatch.Timer1.Stop()
TextBox6.Text = StopWatch.TextBox1.Text
StopWatch.Close()

The problem is, when I start the timer with doing an operation, the timer become slower than when I call the timer form alone.

What is the problem?

Posted 12-Jun-11 20:17pm

Abdi tombang

Updated 12-Jun-11 20:36pm

Kim Togo

v2

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Sergey Alexandrovich Kryukov 13-Jun-11 2:40am

Not clear. Where is the timer?
--SA

Sergey Alexandrovich Kryukov 13-Jun-11 2:43am

What's is the type of StopWatch? System.Diagnostics.Stopwatch does not have member called Timer1. Use System.Diagnostics.Stopwatch.
--SA

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Abhinav S · Answer 1 · 2011-06-12T20:23:00

Solution 1

Try using the StopWatch class directly.
See here[^].

Posted 12-Jun-11 20:23pm

Abhinav S

Comments

Abdi tombang 13-Jun-11 2:30am

Same :(
I've try to use it direcly.
But the timer still come too slow :(

Sergey Alexandrovich Kryukov 13-Jun-11 2:51am

This is misunderstanding. What OP uses is not actually a StopWatch, hence the problem.

Please see my answer.
--SA

Sergey Alexandrovich Kryukov · Answer 2 · 2011-06-12T20:49:00

What you call StopWatch is not a "real" StopWatch, not System.Diagnostics.Stopwatch. I don't know what is it. See my comments to the question.

For best accuracy use System.Diagnostics.Stopwatch.

I'm afraid you use System.Windows.Timer. If you need any reasonable accuracy, don't use this type (basically, you never need it at all); this timer is notoriously inaccurate! What you observe is maybe the effect of its low priority.

Moreover, you almost never need to use timers! In most cases, a thread is easier to implement; and the result will be much more robust; for details, please see my past answer:
Timer Threading in C#[^].

—SA