How to remove history from browser when logout

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I want to remove history and cache after log out the application. I set the cache functionality off on page load. But after log out when i press back button then it will display webpage expired because of cache removed.

Can Anyone Tell me how to remove history on log out with asp.net.

Thanks,

Posted 4-Jul-12 3:18am

Mohd Imran Saifi

Updated 5-Jul-12 21:50pm

v2

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3 solutions

Solution 2

Write these link to clear the session in the cs page.

C#

Session.Abandon();
        Session.Contents.RemoveAll();
        FormsAuthentication.SignOut();

and write in aspx page

HTML

<script type="text/javascript" >        history.forward();
    </script>

these code will clear all the session and browser history so that back button of the browser will not work.

Posted 4-Jul-12 3:45am

bhagirathimfs

Updated 5-Jul-12 3:53am

v3

Comments

Mohd Imran Saifi 5-Jul-12 1:36am

javascript will not help

bhagirathimfs 5-Jul-12 5:00am

sorry didn't get your question.. :(

Mohd Imran Saifi 5-Jul-12 9:49am

i mean :-
<script type="text/javascript" mode="hold" /> history.forward();
</script>
this code is not working.

bhagirathimfs 5-Jul-12 9:52am

excluding that is your requirement fulfilled?

bhagirathimfs 5-Jul-12 9:54am

Delete 'mode="hold" /'

Solution 3

Try This :-

XML

Begin the new script by entering in the following computer language code:

protected void logout()

{

This code tells the computer to initiate this code anytime the Web browser is closed.


Create the following code immediately under the code listed in Step 1:

session.abandon();

string nextpage="logout.aspx";

response.write (<script language=javascript>);


Type directly under the code provided in Step 3 the following language:

response.write (var backlen= history.length;);

response.write (window.location.href=' +nextpage+ ';);


Enter the code below to conclude the programming of your automatic history-clearing program:

response.write (</script>)

}

Posted 4-Jul-12 4:24am

Yatin chauhan

Comments

Mohd Imran Saifi 5-Jul-12 1:27am

what's the purpose of: response.write (var backlen= history.length;);
it will simply save the history length in variable backlen. but there is now removal code for history.

Yatin chauhan 5-Jul-12 10:08am

Its for to see that its content data in that or not. just for conformation to delete the history.

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Sandeep Mewara · Accepted Answer · 2012-07-04T03:39:00

Solution 1

Have a look at this tip, it should help: Browser back button issue after logout[^]

Posted 4-Jul-12 3:39am

Sandeep Mewara

Comments

Mohd Imran Saifi 5-Jul-12 1:30am

i see this previously. but it will help me only clear the cache. but i also want to remove the browser history. cause when i doing back after logout it will display the web page is expired. but i do not want to display this msg.

Sandeep Mewara 5-Jul-12 2:24am

Did you read/tried all? One of the options on the tip will disable the back button... not even letting user to click back.

bbirajdar 5-Jul-12 10:55am

Sandeep.. I could not believe that the code running in the browser sandbox could disable the browser buttons. So I tried it myself.. The 'Back' button is not disabled using this code.. And AFAIK, it cannot be disabled ..

On the other hand, using the javascript, the page is moved forward in history on the click of back button such that the previous page from history is never displayed.

Sandeep Mewara 5-Jul-12 11:19am

// Code disables caching by browser. Hence the back browser button grayed out (as if disabled)
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.UtcNow.AddHours(-1));
Response.Cache.SetNoStore();

bbirajdar 5-Jul-12 14:36pm

I strongly disagree.. I tested it in IE 9 and it does not 'gray out'..Its still blue and can be clicked

Sandeep Mewara 5-Jul-12 23:29pm

Ok. Will check in IE9 then. It was as expected till IE8.

Mohd Imran Saifi 6-Jul-12 3:48am

can you give me the sol. of the problem.
i Want to clear the history and cache on logout.

bbirajdar 6-Jul-12 6:48am

Dear Mohd.. Your requirement is wrong. Whatever code executes in the browser has very limited access to the user's machine e.g. creating the cookies etc. As a integral part of web security, no browser allows the code executing inside the browser to access the files on the user's machine. Since the history is stored on user's machine, even if you write code in C# or javascript or anything, it will not get access to user's file system and it cannot delete the history files.

Guys , correct me if I am wrong.

For Cache issue, you can use the above code. It will work

Mohd Imran Saifi 6-Jul-12 9:53am

Dear Sir, i like the way you explained.
as i see in gmail When the user is on application he can navigate back and prev., but when the user log out it will not do the back.

I want something like that in my web application. the above code mentioned by Mr. Sandeep Mewara, it will disabled the cache.
i want something which stops the user to go back. like in gmail.
Please Help me, and correct me if i am wrong.
Thanks.

Sandeep Mewara 6-Jul-12 9:54am

Correct. History files cannot be deleted in the context we are discussing here.

One can manually go and delete it though ;)

Mohd Imran Saifi 6-Jul-12 10:05am

Dear Sir,I appreciate your answer. i want something which stops the user to go back after logout. like in gmail.

Mohd Imran Saifi 6-Jul-12 9:47am

Dear Sandeep Sir, i use this code in firefox 12.0, chrome, and IE9. It will only clear the cache but the browser back button is not disabled.
i use this code on my master page's page.

Mohd Imran Saifi 5-Jul-12 9:48am

But i Want to clear the history and cache on logout.

Sandeep Mewara 5-Jul-12 10:54am

:doh:
Do you as you wish. Had you went through the entire tip and tried them, by this time it would had been resolved.