In my app a user picks a vendor from a pull-down and is then transferred to a page to list the vendor's products. If a user presses the back button a cached page is presented with the chosen vendor in the drop down. This behavior nullifies the used from again choosing a vendor.
At the top of the pull-down page I entered response.expires=0 but the cached page is still presented. I also tried it at the bottom of the page with no luck. What is the procedure to prevent a page from caching please?