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I am using system.timer in a windows service application (c#) and have added:
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.UnhandledException +=
new UnhandledExceptionEventHandler(MyExceptionHandler);
To handle my exceptions, does this work in a Windows Service as it does not seem to work? Does anyone have any alternative ideas?
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The . NET Framework provides a couple events that can be used to catch unhandled exceptions. You only need to register for these events once in your code when your application starts up. For ASP.NET, you would do this in the Startup class or Global.
An unhandled exception is an error in a computer program or application when the code has no appropriate handling exceptions. Learn about the definition and examples of unhandled exceptions, and explore programming and exception handlers. Updated: 01/04/2022. Create an account.
The UnhandledException event is raised for unhandled exceptions thrown in other threads. Starting with Microsoft Visual Studio 2005, the Visual Basic application framework provides another event for unhandled exceptions in the main application thread. See the WindowsFormsApplicationBase. UnhandledException event.
7. Which function is invoked when an unhandled exception is thrown? Explanation: terminate() function is called/invoked incase any exception is not handled properly.
This mechanism will work to capture Unhandled Exceptions in any environment including Windows Services. However there are some limitations on what kind of exceptions can be handled in this way. For instance, a StackOverFlowException may be unhandled but do to it's nature you won't ever see it go through an UnhandledException handler.
Why do you think this is not working? Have you tried attaching to the process with a debugger , enabling first chance exceptions and see what is going on?
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Why do you have an unhandled exception in a service? What is the exception? Some exceptions have "special behavior" (and another link here for .NET 4 changes to corrupted state exceptions).
Also, what are you trying to do in the handler? Maybe the actions you're trying to do in the handler are what's limited when running as a service.
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