Logout Button for <asp:LoginStatus> not working

This is part of the method that the Substitution control invokes to create a dynamic css driven menu, that is sensitive to authentication state. If you strip out the <li> tags you will have the bare-bones of it.
 
        If context.User.Identity IsNot Nothing And context.User.Identity.IsAuthenticated Then
            SB.AppendLine("      <li><a href='" + strRoot + "logout.aspx'>Sign Out</a></li>")
        Else
            SB.AppendLine("      <li><a href='" + strRoot + "login.aspx' rel='nofollow' title='Sign In'>Sign In</a></li>")
            SB.AppendLine("      <li><a href='" + strRoot + "join.aspx' rel='nofollow' title='Sign Up'>Sign Up</a></li>")
        End If
 
 
 
 
The logout.aspx page is basically a vanilla aspx page with an onload event.
 
Imports System.Web.Security
Imports System.Web.Configuration
 
Partial Class member_logout
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        ' ms-help://MS.VSExpressCC.v80/MS.NETFramework.v20.en/cpref12/html/M_System_Web_Security_FormsAuthentication_SignOut.htm
        ' FormsAuthentication.SignOut Method 
        ' Security Note  
        ' Calling the SignOut method only removes the forms authentication cookie. 
        ' The Web server does not store valid and expired authentication tickets for 
        ' later comparison. This makes your site vulnerable to a replay attack if a 
        ' malicious user obtains a valid forms authentication cookie. 
        ' To improve security when using a forms authentication cookie, 
        ' you should do the following:
 
 
        Try
 
            FormsAuthentication.SignOut()
 
            ' This causes the login page to concatenate a ReturnUrl to the logout.aspx page, 
            ' hmmm a continuous loop, if you login, you are are returned to the logout page 
            ' and logged out again then redirected to the login page with a ReturnUrl to the logout page...
            ' FormsAuthentication.RedirectToLoginPage()
 
 
            ' logoff problem, how to remove ReturnUrl after logoff?
            ' http://forums.asp.net/t/1159904.aspx
 
 
            Roles.DeleteCookie()
 
            Response.Redirect("login.aspx")
 
        Catch ex As Exception
        End Try
 
    End Sub
 
End Class
                                              

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Imports System.Web.Security
Imports System.Web.Configuration
 
Partial Class member_logout
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        ' ms-help://MS.VSExpressCC.v80/MS.NETFramework.v20.en/cpref12/html/M_System_Web_Security_FormsAuthentication_SignOut.htm
        ' FormsAuthentication.SignOut Method 
        ' Security Note  
        ' Calling the SignOut method only removes the forms authentication cookie. 
        ' The Web server does not store valid and expired authentication tickets for 
        ' later comparison. This makes your site vulnerable to a replay attack if a 
        ' malicious user obtains a valid forms authentication cookie. 
        ' To improve security when using a forms authentication cookie, 
        ' you should do the following:
 
 
        Try
 
            FormsAuthentication.SignOut()
 
            ' This causes the login page to concatenate a ReturnUrl to the logout.aspx page, 
            ' hmmm a continuous loop, if you login, you are are returned to the logout page 
            ' and logged out again then redirected to the login page with a ReturnUrl to the logout page...
            ' FormsAuthentication.RedirectToLoginPage()
 
 
            ' logoff problem, how to remove ReturnUrl after logoff?
            ' http://forums.asp.net/t/1159904.aspx
 
 
            Roles.DeleteCookie()
 
            Response.Redirect("login.aspx")
 
        Catch ex As Exception
        End Try
 
    End Sub
 
End Class

                                              

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