Logout code for website with back button issue

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Hii any one can tell me logout code for web applicatio. i am doing logout but when i click on Back button of browser then It shows back page again. How can i remove..Thnxx..

Posted 11-Jan-14 0:01am

D.K.Pareek

Updated 30-Apr-19 5:33am

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Vidyasagar Machupalli · Answer 1 · 2014-01-11T00:04:00

Solution 1

C#

protected void btnlogout_Click(object sender, EventArgs e)
       {
           Session.Abandon();
           Session.Clear();
           Response.Redirect("LoginPage.aspx");
       }

Posted 11-Jan-14 0:04am

Vidyasagar Machupalli

Comments

D.K.Pareek 11-Jan-14 6:10am

@vidyasagar back button is working till Nw..after this code..

Christian Graus · Answer 2 · 2014-01-12T12:51:00

The other poster is right. You CANNOT stop the back button working. Solutions you find on the web, are easily hacked. All you can do, is write code to log the user out, and mark your pages to not be cached, so that they reload when the user tries to go back ( and thus go to your login page ).

http://www.htmlgoodies.com/beyond/reference/article.php/3472881[^]

**Dnyaneshwar**@Pune · Answer 3 · 2014-01-12T19:40:00

Solution 6

Use this code in your logout code

C#

Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Cache.SetExpires(DateTime.UtcNow.AddHours(-1));
Response.Cache.SetNoStore();

Posted 12-Jan-14 19:40pm

Dnyaneshwar@Pune

JoCodes · Answer 4 · 2014-01-12T16:37:00

Solution 3

Adding an CP reference article which deals with the same issue.

Browser Back Button Issue After Logout[^]

Hope this helps...

Posted 12-Jan-14 16:37pm

JoCodes

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 5 · 2014-01-12T17:22:00

Solution 4

Check Browser back button issue after logout[^] and follow the technique.

Posted 12-Jan-14 17:22pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Praveen_P · Answer 6 · 2014-01-12T21:54:00

in the page load event write following code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (Session["loginstatus"].ToString() == "")
    {
        Response.Redirect("Login.aspx");
    }
}

and write following code in logout button click event

C#

protected void LinkButton1_Click(object sender, EventArgs e)
    {
        Session.Abandon();
Session.Clear();
        Response.Redirect("Login.aspx");
    }

then at the time of login set

Session["loginStatus"] = "ok";

Member 12274397 · Answer 7 · 2019-04-30T05:34:00

This issue happens as once the user logs out, the page can still gets served from the cache. Hence the cache needs to be cleared once the user logs out.please include below lines of code in your logout function to clear cache.

HttpContext.Current.Response.AddHeader("Cache-Control", "no-cache, no-store, must-revalidate"); HttpContext.Current.Response.AddHeader("Pragma", "no-cache"); HttpContext.Current.Response.AddHeader("Expires", "0");