如何在asp.net MVC中处理和压缩GZipped表单?

I have an iPad app that submits orders to an ASP.NET MVC web site via form post. It is posting JSON which can be fairly large for a mobile device to send (200~300K) under certain conditions. I can GZip the form post but then my asp.net mvc chokes on the gzipped content.I have an iPad app that submits orders to an AS