web browser back button, because the the obsolete (in that context) page data might become a headache for you.
when i started finding solution to such issue to me java script was the first choice for me, just clearing the browser history using history.go(-1), but for more better approaches i got information about the use of meta tag for that purpose.
the two types are PRAGMA NO-CACHE and cache-control
as all meta tags are required to added in header
i.e
<html>
<head>
meta tags here!
</head>
</html>
try this :
<meta equiv="PRAGMA" content="NO-CACHE">
or
use with:
<meta equiv="PRAGMA" content="NO-CACHE">
<meta equiv="Expires" content="-1">
if doesn't work try the cache control tag
<meta equiv="CACHE-CONTROL" content="NO-CACHE">
if things don't come your way this will surely work for asp.net pages:
Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1))
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Response.Cache.SetNoStore()
Resources:
http://support.microsoft.com/kb/222064
Caching Tutorial
ASP.Net forum post
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