ASP Expiration not working 1

[disk42]

Hey,

I'm working on a picture upload site. I have 3 main pages:
1) Picture Type Choice
2) Upload Form
3) Thank You
There is a sessioned order number that is used throughout. It is created in (1) and cleared in (3). (2) and (3) check to see if the order number is still sessioned before they load. If the order number is not sessioned, then they redirect back to (1). The problem I am having is when a person is at (3) and clicks the back button, they still see the order form (cached, I guess) that they just uploaded, i.e. it is not redirecting to (1). I have tried (as seen in other threads on this site):

Response.Expires = -1
Response.Expires = 0
Response.ExpiresAbsolute = Now()
Meta tags

and none have worked. Does anyone know what may be causing this? I also turned off HTTP-Keep Alives (something else I saw on this site).
Thanks for any help,
Phil

 

[Genimuse]

An interesting little article here suggests that you'll need the expiration and no-cache in two places:

http://www.htmlgoodies.com/beyond/nocache.html

 

[disk42]

Excellent! I put the ASP code from that site into my Order form page, and it worked. Thanks a bunch

Phil