Display custom error page when file upload exceeds allowed size in ASP.NET MVC

Question

My main issue is that I want to display an custom error page when an uploaded file exceeds allowed size (maxRequestLength in web.config).

When the big file is upload

Answer 1

When running on IIS6, I solved it with a HttpModule by handling the BeginRequest and check if httpApplication.Context.Request.Length is larger than maxRequestLength.

To be able to redirect the entire request has to be read before redirecting.

See code example at this link: http://www.velocityreviews.com/forums/t97027-how-to-handle-maximum-request-length-exceeded-exception.html