Does Controller.OnException get called before ExceptionFilter?

Question

Trying to understand the MVC pipeline here:

It seems that the order is like so:

1. AuthorizationFilters
2. OnActionExecuting
3. ActionExecutes
4. OnActionExecuted
5. OnResultExecuting
6. Create the action result
7. OnResultExecuted
8. Write to response stream

When does the Controller.OnException run relative to the ExceptionFilterAttribute.OnException ?

Answer 1

It's probably documented somewhere, in the source at least, but I just ran this little experiment:

// in MyHandleErrorAttribute, globally configured
public override void OnException(ExceptionContext filterContext)
{
    Debug.Print("HandleErrorAttribute.OnException 1");
    base.OnException(filterContext);
    Debug.Print("HandleErrorAttribute.OnException 2");
}

...

// in HomeController
protected override void OnException(ExceptionContext filterContext)
{
    Debug.Print("Controller OnException 1");
    base.OnException(filterContext);
    Debug.Print("Controller OnException 2");
}

and the Output Window shows:

HandleErrorAttribute.OnException 1
HandleErrorAttribute.OnException 2
Controller OnException 1
Controller OnException 2