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Exceptions in System.Timers.Timer.Elapsed event are ignored & not reported - desired behaviour?

P: n/a

I was testing this with .NET Framework 2.0.

Exceptions in the Elapsed event handler of a System.Timers.Timer are
ignored, they are not handled by the runtime and not reported (when
running outside of VS.NET) either. Ther Timer continues as if nothing
Is this the desired behaviour, because this would have very negative
impact on analysis of unexpected errors?
Am i missing any design directives concerining the exception handling
in a System.Timers.Timer object?

The following example demonstrates, what i am speaking of

using System;
using System.Timers;

class TimerTest
Timer myTimer;

public TimerTest() {
myTimer = new Timer(1000);
myTimer.Enabled = true;
myTimer.Elapsed += new ElapsedEventHandler(myTimer_Elapsed);

void myTimer_Elapsed(object sender, ElapsedEventArgs e) {
Console.WriteLine("TimerTest: Simulate an unexpected exception
// Simulate unexpected exception ...
throw new Exception("Elapsed test exception.");

class Program
static void Main(string[] args) {
TimerTest timerTest = new TimerTest();
Console.WriteLine("TimerTest running. Press any key to

As already said, the exception is catched inside of VS.NET 2005 by the
Exception Assistant, when debugging.

Thanks & greets

Dec 14 '05 #1
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