HOW TO USE SIGNOUT FUNCTION

protected void Page_Load(object sender, EventArgs e)
{
if (Session["UserID"] != null)
{
BLL_Users objUser = new BLL_Users();
objUser.LogOutUser(Convert.ToInt16(Session["UserID"]));
}
FormsAuthentication.SignOut();
Session.Abandon();
Response.Redirect("Login.aspx", false);
}


}