why doesn't the function run within this timer?

Question

Why wouldn't the Vote(); function run wihtin this timer?

The message box one works but vote one doesn't

public void Timer()
{
        var timespan = new TimeSpan(0, 0, 20);
        var timer = new System.Timers.Timer(timespan.TotalMilliseconds);
        timer.Elapsed += (o, e) =>
        {
            MessageBox.Show("Worked");
            Vote();
        };
        timer.Start();
}

Vote is above this function within this code, Thanks, Oliver.

How do you know the Vote function doesn't run. If the MessageBox shows then the Vote function must also have run! — Blake7, Feb 27 '12 at 05:56
It should write something into the rich text box. but it does not. — user1233208, Feb 27 '12 at 06:04

Hand-E-Food · Accepted Answer · 2012-02-27T22:01:50.547

1

The Timer.Elapsed event suppresses all exceptions, causing you to not see any errors. Add your own error handling in the Elapsed event to see what's failing.

From MSDN:

The Timer component catches and suppresses all exceptions thrown by event handlers for the Elapsed event. This behavior is subject to change in future releases of the .NET Framework.

edited Feb 27 '12 at 22:01

answered Feb 27 '12 at 06:07

Hand-E-Food

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Uhm, no. Using a slash as a path delimiter in Windows is perfectly OK. – Christian.K Feb 27 '12 at 06:26
@Christian.K, I never knew that. Thanks! Any idea when that was introduced? Edited my answer to keep the facts straight. – Hand-E-Food Feb 27 '12 at 22:00
I don't have any reference, but I knew about it since "Windows NT", I guess. Anyway, [this SO question](http://stackoverflow.com/q/7314606/21567) has more information about directory separators on Windows (hint: Korean version, etc. ;-) – Christian.K Feb 28 '12 at 05:16

score 0 · Answer 2 · answered Feb 27 '12 at 06:01

The elapsed timer code can run on a separate thread. If it does you could have a cross threaded violation. Can't know for sure without seeing the code for Vote. If you want to make sure the lambda is running writing a message out the console would be less disruptive than using a winform dialog box.

why doesn't the function run within this timer?

2 Answers2