I have seen several web sites that in web forms user registration that consists with more than one page, when user presses the browser back button in order to go to the previous form filled page, seems that the previous page is rebuilt to ensure to fill all the form fields options according to the user selections. Seems that they rebuilt the page instead of rely on the user browser cache in order to maintain the options selected when user decides going back. Is this practice true? Or they are doing other things when the previous page is reloaded?

I have some dropdownlist form fields that are populated on client side, and these controls doesn’ t keep the original selections when the user decides to return to the form through the browser’s back button.

Any ideas?


Thanks