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  • Dalton Kirk 1 post 22 karma points
    Aug 10, 2022 @ 09:34
    Dalton Kirk

    UseExceptionHandler does not work with RenderControllers


    I have a page in my Umbraco site that uses the standard RenderController and I can access it with the path /500

    Now I want to setup the Exception Hanlder middleware to show this page in the event of an internal server error.

    So I add this to my startup.cs:

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)

    Then I throw a new exception on my homepage controller to test this out. In the console, I get an error saying the Exception handler returned a 404 but this is not allowed.

    We can get around this by allowing 404s on the exception handler with this:

                    new ExceptionHandlerOptions()
                        AllowStatusCode404Response = true,
                       ExceptionHandlingPath = "/500",

    But then I get the blank browser default 404 error page. Because the issue is that it can not find my page so it can't display it.

    If I set the Exception Handling Path to a static .HTML file or a SurfaceController or a custom controller with a custom route, it works.

    It just does not work when you point to a RenderController.

    I feel like this is something it should be able to handle.

    Any advice appreciated!

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