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I want to disable browser's back button after log out.
I have already set session["session-id"] to null on log out event.
But when I am pressing Back button of browser,it will redirect me to that secure page from which I've already log out.
Please Give me any solution about this problem.

Have a look at this Tip: Browser back button issue after logout[^]
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Meet Raval 26-Sep-12 2:43am    
I've seen the link that you have given..
But it looks more complicated than previous solution.
Sandeep Mewara 26-Sep-12 2:47am    
It has multiple ways suggested. Strange to hear - it's complicated! :)
Here is how i did it

Assuming that you have a Login.aspx and Home.aspx and Moreover you have "Login" Button in the Login.aspx and a "SignOut" Button in the Home.aspx;

Put this under the Page Load event of the Login.aspx
Session["LoginId"] = null;

Put this under the click event of "Login" button [NB. put this code after you validate the password]
Session["LoginId"] = TextBox_UserName.Text;
// TextBox_UserName is the text box on the Login.aspx page that is used to input the username

Put this under the Page Load event of the Home.aspx
if (!IsPostBack)
       if (Session["LoginId"] == null)
          Response.AddHeader("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate");
          Response.AddHeader("Pragma", "no-cache");


Put this under the Click event of "SignOut" button
   Session["LoginId"] = null;
   Response.Buffer = true;
   Response.ExpiresAbsolute = DateTime.Now.AddDays(-1d);
   Response.Expires = -1000;
   Response.CacheControl = "no-cache";
   Response.Redirect("Login.aspx", true);
catch (Exception ex)

What happens is that When the user clicks back button and the Login.aspx page appears then the session is set to null so pressing the back button to access the home page again would not open the home page rather it redirects it to the Login.aspx page. Same is true if the user press the "SignOut" button, the back button redirects it to Login.aspx.
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Hey Bro.... try this out

I Perfectly got the solution.

When we request any page from server, browser maintains its cache in local system. When user press back button the cached page opened in front of user.

Its mean we have to disable the cache functionality for our session pages. So for this you have to insert this code into “Page_Load” event of the session page or to master page that is used for secure pages.
Response.Buffer= true;
Response.Expires =-1500;
Response.CacheControl = "no-cache";
if(Session["SessionId"] == null)
Response.Redirect ("WhereYouWantToGo.aspx");

This code just disable the cache for current page and save this page in buffer.

And buffer is maintained in memory so when user log
out the buffer will
destroy and no backup copy of that page available to view.

So its mean we successfully disable the back button.
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Meet Raval 26-Sep-12 2:23am    
Thanks Hemant...
This works well in Internet Explorer.
But it is not working in Mozilla Firefox.
Plz tell me if you or anybody have solution about this issue...

Once again thanks hemant..
Have a nice day...
swaroopanalla 24-Jul-13 6:40am    
It works fine in firefox and chrome but not in IE
[no name] 26-Sep-12 2:46am    
My 5+++++++.
[no name] 26-Sep-12 3:56am    
Sarathkumar Nallathamby 11-Jan-13 7:41am    
Hi.. Its Not WOrking In Chrome...
Your Welcome Dude..

Try this out

add this line to your secure page

add this logout button

In my case it work in Mozilla..
Try it and review about this...
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Meet Raval 26-Sep-12 2:32am    
Yes Hemant,
It's working well.
Thanks once again for giving me this solutions.
Genius Dude!!!!
Sandeep Mewara 26-Sep-12 2:33am    
You can either update your answer using 'Improve Solution' or use comment feature to respond to follow up questions of Op instead of posting a new answer.
public void SetPageNoCache()

Call this function in Page_Load event
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