Hi everyone,

I've found an odd behaviour in IE9 caching pdf documents. Let me explain. I've developed (still in progress) a module that uses MS ReportViewer (Local mode) to create and save pdf reports on the server and immediately opens the selected report (response redirect). I've added all the no-cache directives to the response I could find Googling and if I use Chrome or FireFox it works fine, but in IE it always opens the cached pdf.

The code:
....create the pdf...
Response.Cache.SetCacheability(HttpCacheability.NoCache)
Response.Cache.SetNoStore()
Response.Cache.AppendCacheExtension("no-cache")
Response.ContentType = "Application/pdf"
Response.AppendHeader("Pragma", "no-cache")
Response.AppendHeader("Cache-Control", "no-cache")
Response.Redirect("http://" & PortalSettings.PortalAlias.HTTPAlias & PortalSettings.HomeDirectory & "pdffolder/" & fileName, True)

Any ideas?