ASP.NET Global.asax Application_Error works but not when using the Error event

Question

I have an ASP.NET MVC application that is supposed to catch all unhandled exceptions within the global.asax application error handler.

If I define the handler as follows:

protected void Application_Error(object sender, EventArgs e)

then it works fine. However, if within the Application_Start event I try and do:

this.Error += new EventHandler(Application_Error);

The actual event is never called.

Does anyone know why and if so what i'm doing incorrectly?

Paul · Accepted Answer · 2010-12-04 19:31:15Z

3

You shouldn't have to add to the error event explicitly; Application_Error should get called automatically by the framework.

edited Dec 4, 2010 at 19:31

answered Dec 12, 2009 at 16:34

Paul

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2 Comments

TygerKrash Over a year ago

I'll up vote this for the first comment, but I don't believe the second part is true, I'm currently running my application with out the CustomErrors element in my webconfig and it's hitting the Error handler fine.

Paul Over a year ago

Thanks, not sure where I go that from . Edited my response.

TheMule · Accepted Answer · 2015-07-28 17:15:41Z

0

The event is not being called either because Exceptions are being caught somewhere else in the application (and swallowed maybe) or because you are registering the event in the Application_Start event (not needed). You want to do something like this in your Application_Error:

protected void Application_Error(object sender, EventArgs e) {
  Exception exception = Server.GetLastError();
  // log exception
  // Email exception
}

I use this method to both log and E-mail uncaught errors for all my applications. Hope this helps.

edited Jul 28, 2015 at 17:15

answered Jul 28, 2015 at 14:37

TheMule

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