验证后asp.net更改菜单文本

Question

如何在验证后更改菜单任务栏。我目前有一个链接框和一个标签

protected void Page_Load(object sender, EventArgs e)
    {
        // check if user is logged in
        if (Session["login"] != null)
        {
            LblLogin.Text = "Welcome " + Session["Login"].ToString();
            LblLogin.Visible = true;
            LinkButton1.Text = "Logout";
        }
        else
        {
            LblLogin.Visible = false;
            LinkButton1.Text = "Login";
        }
    }

    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        //user logs in
        if (LinkButton1.Text == "Login")
        {
            Response.Redirect("Manage_Register.aspx?Scr=");
        }
        else
        {
            //User logs out
            Session.Clear();
            Response.Redirect("Default.aspx?Scr=");
        }

然而我现在想要它在菜单栏上，我有home, about, contact, login 当用户成功登录时，我希望登录文本更改为注销。