Yes, it's by design in that the Back button is handled stricly within the browser and does not invoke a round-trip to the server. So, there's nothing to cause a server-side page load event to be reised
What can you do? Write a client-side onload event for the window object. In javascript, it would start out like this
<SCRIPT for="window" event="onload">. In that script, you can submit the form. (Something like "document.Form1.submit()" ). That will cause a postback to occur
The only question is: How to make sure that the window onload event is not raised when the page is first loaded? You'll need to check the content of some element on your page that you know will be different, depending on whether the page was freshly loaded or not. I've been known to use a hidden text box for such things but others might have for elegant solutions to offer
HTH
