I have a query app that has a page where there is one page(query.aspx) contains a criteria screen and the query results and another screen(report.aspx) shows the report on an invidiual case that can be reached by clicking an item in the query results panel.
There can be many postbacks to the query.aspx page, and I use Response.Redirect to get to the report.aspx page. I aslo provide naviagation buttons that mean the back is not required, put some users are using it anyway.
The problem is that once in a while when I use the back button, I will receive the error "Warning: Page has Expired" ... use the refresh button. I am having a hard time reproducing this error. I am pretty sure I ruled out time duration as the cause.
Is there a remedy so that the page does not expire, or could someone tell me what the condition is for getting this error message.