How to clear the browsing history of the firefox using asp.net : The Official Microsoft ASP.NET Forums

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archu136

Member

27 Points

96 Posts

How to clear the browsing history of the firefox using asp.net

Jan 23, 2008 05:28 AM|LINK

hi frds

i want to disable the back button of the browser after the user has logged out.

for this i wrote this below code in pageload of the master page

If Session("UserName") = Nothing Or Session("UserRole") <> "Admin" Then
            Session("ErrMsg") = "Session Expired or Access Denied please login"
            Response.Redirect("../Login.aspx")
        End If

        Response.Buffer = True
        Response.Cache.SetCacheability(HttpCacheability.NoCache)
        Response.ExpiresAbsolute = DateTime.Now().AddDays(-1)
        Response.Expires = -1500
        Response.CacheControl = "no-cache"

this is working fine in IE but not in firefox.

i have searched for this but didn't get the solution.

if i could clear the histroy of the firefox then after the user logouts and clicks the back button of the

browser he shouldn't go to the previous page.only login page to be displayed

plz help me

thank u in advance

ARCHU

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DavidKiff

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8660 Points

1733 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 23, 2008 10:30 AM|LINK

Can you not write your own security module and return the user to the login page if the select the back button? It would be a little neater than what your trying to do and is also how the .NET Frameworks version works!

The security module only has to do something that you have performed. Intercept the request, check to see if the sessions are null, if they are then they are loged out so redirect to login page!

David Kiff

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nikhil.agraw...

Member

470 Points

90 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 23, 2008 10:49 AM|LINK

Pl. find solution at my previous post

http://forums.asp.net/t/1209466.aspx

Nikhil Agrawal
Think before you Think

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dharnendra

Contributor

2955 Points

551 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 23, 2008 12:46 PM|LINK

You can't clear the user's browser history - that is outside of the scope of
the permissions that a web application has granted. What you can do is
explicitly check on each page whether the user is logged in, and if not do a
response.redirect.

Shah Dharnendra G
Technical Leader
GTL-Ahmedabad

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archu136

Member

27 Points

96 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 24, 2008 05:38 AM|LINK

Hi

ok if that is not possible then can we disable the back button of the browser after the user has loged out

this is my sample application.I'm facing this problem in Firefox

I'm Using the Master Page in my application & under User Folder ,2 aspx pages

1)MasterPage.Master

2)login.aspx

3)Logout.aspx

4)User/Page1.aspx

5)User/page2.aspx and User/home.aspx

MasterPage.Master

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Master Page</title>
</head>
<body >
    <form id="form1" runat="server">
    <div>
    <table>
    <tr>
    <td>
    <table>
    <tr>
    <td><a href="User/Page1.aspx" runat="server">Page1</a></td>
    </tr>
    <tr>
    <td><a href="User/Page2.aspx" runat="server">Page2</a></td>
    </tr>
    <tr>
    <td>
    <a href="logout.aspx" runat="server">Logout</a>
    </td>
    </tr>
    </table>
    </td>
    <td>
    <table>
    <tr>
    <td>
     <asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
     </asp:contentplaceholder>
    </td>
    </tr>
    </table>
    </td>
    </tr></table>
    </div>
    </form>
</body>
</html>

Code For MAsterPage.Master

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Session("Uname") = Nothing Then
            Response.Redirect("~/Login.aspx")
        End If
        Response.Buffer = True
        Response.ExpiresAbsolute = DateTime.Now().AddDays(-1)
        Response.Expires = -1500
        Response.CacheControl = "no-cache"
    End Sub

Login.aspx

CodeBehind of Login.aspx

Protected Sub btnLogin_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLogin.Click
        If txtUname.Text = "User" And txtPwd.Text = "User" Then
            Session("Uname") = txtUname.Text
            Session("pwd") = txtPwd.Text
            Response.Redirect("User/home.aspx")
        Else
            lblMsg.Text = "Invalid User / Pwd"
        End If
    End Sub

Logout.aspx

<body >
    <form id="form1" runat="server">
    <div>
     Would u like to login again <a href="login.aspx" runat="server" >Click Here</a>
    <br />
    <asp:Label ID="lblMsg" runat="server" ></asp:Label>
    </div>
    </form>
</body>

Code Behind for Logout page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Session.Abandon()
Session.Clear()
End Sub

After the user logouts and clicks the back button of the firefox browser then page is dislplayed from which he logouts

ex :If user id in Page2.aspx and clicks logout ,and clicks back button then page2.aspx is displayed even after clearing the sessions.

In each page i'm checking the session also but still the page is displayed when back button of the browser is clicked after user loged out.

this is the problem hope u understood

thanks and regards

ARCHU

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dharnendra

Contributor

2955 Points

551 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 25, 2008 12:01 PM|LINK

I have one solution for that problem.

When you click logout button,place and intermediate page which just redirect the page to logout.aspx.

I have solved this probs like this way.

If either from page2 or from page1 when user click logout it will redirect to this intermediate page and then go to logout page, so next time when you click back,it remains as it is.

Shah Dharnendra G
Technical Leader
GTL-Ahmedabad

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archu136

Member

27 Points

96 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 28, 2008 11:16 AM|LINK

Hi

I have tried this ie redirecting to intermediate page but still facing the same problem

can u send the code if possible.

Thanks and Regards

ARCHU

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Benson Yu - ...

All-Star

34797 Points

2497 Posts

Re: How to clear the browsing history of the firefox using asp.net

Jan 29, 2008 07:49 AM|LINK

archu136

after the user logouts and clicks the back button of the browser he shouldn't go to the previous page.only login page to be displayed

Hi archu136,

To prevent the logout user from returning the preious page by clicking the back button, I have provided a solution (with the help of cookie) in the following thread. Also, you can use “NC01”’s solution in that thread.

disable back button of browser so that a user can't go on previous pages after signout
http://forums.asp.net/p/1161997/1923379.aspx

Sincerely,
Benson Yu
Microsoft Online Community Support

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