(Yes, an easy one for the experts)
How do I force the page to refresh when the user hits the back button on the browser? I have an 'add' record form and I have inserted code so that it will not duplicate if the user submits the form several times however I just discovered that if the user goes forward then back and submits again it will create a new record. I want it to display the 'page expired' message.
???
I think there is a setting in IIS that you can use for that...
If you go to Web Site Properties, Http Headers tab, you can set the Enable Content Expiration in there...
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I updated 'content expiration' to 'immediately' and it doesn't seem to have made any difference?
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Maybe stop and start the web site to make sure it has the new settings??
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Hi q97, I stopped and re-started IIS... still did nothing. I ended up using the following code in the header of pages:
Code:
<%
Response.AddHeader "Expires", now()
Response.AddHeader "Last-Modified", now()
Response.AddHeader "Cache-Control", "no-cache, must-revalidate"
Response.AddHeader "Pragma", "no-cache"
Response.Expires = -1
%>
<script>
history.forward();
</script>
(I use Dreamweaver templates, so it only took a few seconds to implement).
It now appears that the 'back' button is disabled; and if that doesn't work the content will be refreshed!
It wasn't what I was originally trying to do but I think this method is probably better in the long run. It's only for 'admin' users so I can add some explanation in my help/FAQ documentation.
Thanks for your post anyway!
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As long as it works!
I might even try using some cache control in my page as well...didn't think of it to be honest.
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