How to prevent back button after logout in asp.net?

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am having 2 webpages login.aspx,default.aspx are their in my web project,
after gave logout from default.aspx am redirecting to login page,back button of browser is pressed means it going to default.aspx , please tell me how to prevent it,it should be as login.aspx

Posted 3-Jan-13 23:43pm

kalaivanan from Bangalore, India

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Dylan Morley · Answer 1 · 2013-01-03T23:48:00

Solution 1

Please have a look at my blog post on this subject

http://www.dylanmorley.com/blog/post/Web-Development-Disabling-the-back-button.aspx[^]

This is because of caching on the browser and the way browser history works. The short answer to this question is

You don't disable the back button. The back button isn't yours to disable, it's part of my browser and I want it to work.

Usually when people post questions like this, it's because they don't understand how to control the flow of data from the site. In this case, the two things we are concerned with are authentication and caching.

So, add the caching directives to your pages and the user will be forced to reauthenticate before they can view your content again.

Posted 3-Jan-13 23:48pm

Dylan Morley

Comments

kalaivanan from Bangalore, India 4-Jan-13 6:02am

Thanks

[no name] 4-Jan-13 6:04am

5+

kalaivanan from Bangalore, India 4-Jan-13 6:38am

Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
Response.Cache.SetNoStore();

please tell me where to put this code in default.aspx or login.aspx

kalaivanan from Bangalore, India 4-Jan-13 6:39am

this code also

HttpContext.Current.Response.Cache.SetExpires(DateTime.UtcNow.AddDays(-1));

HttpContext.Current.Response.Cache.SetValidUntilExpires(false);
HttpContext.Current.Response.Cache.SetRevalidation(HttpCacheRevalidation.AllCaches);
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.Cache.SetNoStore();

Dylan Morley 4-Jan-13 7:25am

Put it in your Page_Load event in default.aspx

nehas1jan · Answer 2 · 2013-01-04T01:58:00

Hi,

You can use Try and catch follow the below points it's very easy:

1.create sessions at the click of login button.
2. at the click of logout clear all sessions
3.when you clcik back button u ll navigate to the default page,to prevent this situation you need to use try and catch.

it ll help you if not let me know further.

Thanks.

Shubh Agrahari · Answer 3 · 2013-01-04T02:06:00

Solution 5

hello
i think it helps you

XML

<script type="text/javascript" language="javascript">
window.onkeydown = function(event)
{
if(event.keyCode == 8);
return false;
}
</script>

Posted 4-Jan-13 2:06am

Shubh Agrahari