How to Encrypt QueryString from IIS

Hello everyone,

                          I'm looking for a way to encrypt Query String in my ASP.Net Application. I Search on Internet and found that we can do this by first encrypting them, then send it and than decrypt it. But with this solution will take much time as I will have to go to every page and find where Im using Request.QueryString.

Now I'm thinking cant this be done from IIS, so that I don't have to change my code ?

I hope someone will help me out.

Thanks