session destroy not working

[ballball]

is this the right section for visual c#.net?

session destroy wont work if i use internet explorer 9, but in google chrome it's working..


the problem in IE 9 is that, when i logout then i press the back button on the browser the session variable still exist, but when i hit enter key on the url address bar it destroy the session variable what approach should i do?

i'm creating a simple login/logout.

i have two aspx file

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace CT2
{

    public partial class WebForm1 : System.Web.UI.Page
    {
        
           protected void Page_Load(object sender, EventArgs e)
        {

            if ((string)(Session["users"])!=null)
            {
                Session.Clear();
                Session.Abandon();
                Session.RemoveAll();
               }
         
        }

        protected void login_Click(object sender, EventArgs e)
        {
            var users= username.Text;
            var pass= password.Text;
           
        if (users== "admin" && pass== "admin")
        {
 
  
  //Response.Write("<script>alert('successfully login!')</script>");
         
      Session["users"]=users;      
      Response.Redirect("user.aspx");

    
            /*HttpContext CurrContext = HttpContext.Current;
            CurrContext.Items.Add("users",Id_User);  
            Server.Transfer("user.aspx");        
              */
        }else if(users!="admin" || pass!="admin"){
        Response.Write("<script>alert('incorrect username and password')</script>");
        username.Text = "";
        password.Text = "";

        }
    
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace CT2
{
    public partial class user : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
           
 /* HttpContext CurrContext = HttpContext.Current;
NameOfUser.Text = CurrContext.Items["users"].ToString();
   */

            if ((string)(Session["users"]) != null)
            {
                NameOfUser.Text = (string)(Session["users"]);
            }
            else
            {
                Session.Clear();
                Session.Abandon();
                Session.RemoveAll();
                Response.Redirect("WebForm1.aspx");
            }

        }
    protected void Button1_Click(object sender, EventArgs e)
        {

            Session.Clear();
            Session.Abandon();
            Session.RemoveAll();
         Response.Redirect("WebForm1.aspx");
        }

        }
}