logout problem in asp.net

Question

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when loging out how can i disable the go back button of browser..now when i click on the log out button in my project i redirect to log in page but the go back is still enabled and so no use...how can i solve this..

Posted 4-Sep-10 5:34am

danilmanuel

Updated 21-Mar-18 17:21pm

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9 solutions

Solution 4

You can remove the session by using :

Session.Remove("SessionName");

Anurag

Posted 7-Sep-10 1:40am

@nuraGGupta@

Solution 1

Why do you need to disable the back button? If you have properly logged the user out then pressing the back button should always return them to the login page since they're session is no longer valid.

Posted 4-Sep-10 5:46am

Not Active

Comments

danilmanuel 4-Sep-10 11:49am

hello..how can i disable the session..

[no name] 4-Sep-10 13:50pm

You should spend some time reading up on ASP.NET authentication

Solution 2

This is s common question that everybody asks the same.

I think you dont need to work with back button as browser does not allow you to handle back button.

Rather on every request you check for a session value.

Like :

if(Session["authkey"] == null)
  Response.Redirect("Login.aspx");

This will ensure that when any link is clicked after log out, it automatically redirects to Login page.

Other than that you can also put a forward javascript to ensure that you disable browser back.

Check this :
http://csharpdotnetfreak.blogspot.com/2009/04/disable-browser-back-button-javascript.htm[^]

Posted 4-Sep-10 6:26am

Abhishek Sur

Solution 6

try this...

when you log out just give a message box that you are logging out.... and then redirect to login page:

like this:

Response.Write("<script>alert('you are logging out..... .......');window.location = 'loginPage.aspx'</script>");

Posted 8-Jun-11 0:51am

karan joshua

Solution 7

You need to disable the back button after the user signout the account...

I think This will help you[^]

Posted 8-Jun-11 1:05am

version_2.0

Solution 5

Hi

Try adding the following code to your homapage Page_load

HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));
Response.Cache.SetNoStore();

Thanks.

Posted 8-Jun-11 0:32am

Balwant.mnd

Updated 8-Jun-11 0:40am

v2

Comments

RaviRanjanKr 8-Jun-11 6:42am

Always Wrap your code in "pre" tags :)

Dylan Morley 8-Jun-11 6:44am

And don't bump old threads with answers that are exactly the same as other peoples. How is this different from S Mewara's answer?

Solution 8

MSIL

HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        HttpContext.Current.Response.Cache.SetNoServerCaching();
        HttpContext.Current.Response.Cache.SetNoStore();
        Session.Abandon();

and
Collapse
<script type="text/javascript" language="javascript">
window.history.forward(1);
document.attachEvent("onkeydown", my_onkeydown_handler);
function my_onkeydown_handler()
{
switch (event.keyCode)
{
case 116 : // F5;
event.returnValue = false;
event.keyCode = 0;
window.status = "We have disabled F5";
break;
}
}
</script>

Posted 8-Jun-11 1:07am

Mohd Wasif

Solution 9

Hope this[^] might help you.

Posted 8-Jun-11 2:44am

Ramalinga Koushik

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Sandeep Mewara · Accepted Answer · 2010-09-04T20:36:00

This happens because of cache.
1. clear the sessions
2. clear the cache such that browser has no history (this will make back/forward button in browser grayed out disabled.)

Code for clearing cache can be put up in code behind as follows:

C#

// Code disables caching by browser. Hence the back browser button
// grayed out and could not causes the Page_Load event to fire 
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.UtcNow.AddHours(-1));
Response.Cache.SetNoStore();

You can add somethin similar in form aspx if you want to place it there:

<meta http-equiv="Cache-Control" content="no-cache">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Expires" content="0"></meta></meta></meta>