Exception mapping . NET for HTTP status codes

Question

Situation

I’m working on one Httpmodule who is responsible for monitoring usage patterns and intercepting and managing untreated exceptions in ASP.NET applications via events BeginRequest, EndRequest and Error of the current context of HttpApplication.

Question

Is there any direct and already implemented way to map exceptions of the . NET platform for its HTTP equivalents? I can imagine that some maps would be:

FileNotFoundException       > 404 File Not Found
UnauthorizedAccessException > 403 Forbidden
AuthenticationException     > 401 Unauthorized
[...]
(Qualquer outra exceção)  > 500 Internal Server Error

I don’t want to reinvent the wheel, and prefer to use some function already implemented (preferably native to the platform).

Answer 1

Solution

Exceptions may suffer cast for the guy HttpException, and from this type the method GetHttpCode() may be called:

        try
        {
            throw new FileNotFoundException("Teste");
        }
        catch (Exception err)
        {
            var httpException = err as HttpException;
            if (httpException != null)
            {
                var httperror = httpException.GetHttpCode();
                // O valor de httperror é 404.
            }
        }

Source: https://stackoverflow.com/questions/619895/how-can-i-properly-handle-404-in-asp-net-mvc