How to kill the all pages in one website (ASP.NET/C#)

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C#

ASP.NET

In my WebSite i am using 15 webforms ..

1.Default.aspx
2.Welcome.aspx
3.Application.aspx
4.apply.aspx
All pages have Logout button.


once i click the logout button page redirect to My HomePage(Default.aspx)

my problem is
once i click the logout button. i am trying to open directly 2,3 ,4...15 pages . how the page is automatically Redirected to HomePage(Default.aspx)

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

What I have tried:

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