How to stop timer while debugging

Question

So I setup a System.Timers.Timer and have a handler for the Elapsed event. It works as expected.

However, if I want to debug the code that is called within the elapsed handler; the timer will continue generating additional events. Thus, I can't single step through the code because timer events stack up on top of each other.

The current workaround is to call Stop on the timer upon entering the handler and Start when leaving. However, that is not how the system is supposed to work so that is a temporary fix. I was wondering if there is a way to configure the debugger to halt the timer while debugging.

Pekka · Accepted Answer · 2020-05-15 22:08:55Z

13

If you want you can wrap this into a #if DEBUG directive or you can use System.Diagnostics.Debugger.IsAttached.

edited May 15, 2020 at 22:08

Pekka

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answered Mar 5, 2012 at 21:45

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2 Comments

Dunk Over a year ago

+1 - For the Debugger.IsAttached property. I think I like that better than #if.

Random Dev Over a year ago

to be honest: that depends on what you want to achieve - with the #if thing you don't have the code in your release-version at all, where the other option will be a unused code-path there.

Cᴏʀʏ · Accepted Answer · 2012-03-05 21:56:22Z

6

In your Timer.Elapsed event handler, maybe you can use some preprocessor directives to include code that stops and starts (or disables and enables) the timer:

    private static void OnTimedEvent(object source, ElapsedEventArgs e)
    {
#if DEBUG
        (source as Timer).Stop();
        // or
        (source as Timer).Enabled = false;
#endif

        // do your work

#if DEBUG
        (source as Timer).Start();
        // or
        (source as Timer).Enabled = true;
#endif
    }

edited Mar 5, 2012 at 21:56

answered Mar 5, 2012 at 21:49

Cᴏʀʏ

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1 Comment

Dunk Over a year ago

I have the Stop and Start as a temporary workaround. I'm not really a fan of preprocessor directives. But if that is the only way that might be the route I take.

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