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02/26/2008 at 01:30PM PST, ID: 23195175
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8.8

Problem with HttpCacheability.NoCache and postback

Asked by akobes05 in Programming for ASP.NET

Tags: asp.net, internet explorere 7

Hi All!  

I have a webpage where union members can lookup various information about their membership.  

In the page load event of all pages I have the following code.  If the session expires I set a session flag then test it in GlobalProcs.TestLogin().  If its true I redirect the user to the login page.
        Response.Cache.SetCacheability(HttpCacheability.NoCache)
        Response.Cache.SetExpires(DateTime.Now)
        GlobalProcs.TestLogin()
When the user login the are directed to a sumamry page.  Then they can go to a dependents page.  In a dependent page I have a dropdpwn where they can choose a dependent.  When they choose one the data on the page is refreshed.

I have 2 issues

Can I somehow use FormsAuthentication to see if a user is logged in without using a session variable.  I am worried that setting a session variable resets the session.  Maybe this is not a big deal since I clear out the session anyway.

When the user changes the dependent, click the back button and then the forward button I get an error that the webpage has expired.  It seems like  I cannot navigate to a page that resulted from a postback when I have NoCache set.  Is there any way to fix this.





[+][-]03/17/08 11:16 AM, ID: 21144676

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Zone: Programming for ASP.NET
Tags: asp.net, internet explorere 7
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Solution Provided By: Thogek
Participating Experts: 1
Solution Grade: B
 
 
[+][-]03/17/08 11:19 AM, ID: 21144705

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