ASP.NET: Redirect the page when the session ends

Here's a simple method, without using javascript, to redirect the user to a certain page once their session ends:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
Response.AppendHeader("Refresh", (Session.Timeout * 60) + 5 & "; Url=SessionEnded.aspx")
End If
End Sub