Iterate through all values of HttpSessionState collection

How do I iterate through all values of httpsessionstate collection and display them on a page?
Thanks in advance.

I tried this without luck.

'Adapted from MSDN on Collectionbase class

 Public Sub PrintIndexAndValues(ByVal SessionColl As HttpSessionState)
        Dim i As Integer = 0
        Dim myEnumerator As System.Collections.IEnumerator = SessionColl.GetEnumerator()
        While myEnumerator.MoveNext()
            Response.Output.Write("   [{0}]:   {1}", i, myEnumerator.Current)
            i += 1
        End While
   End Sub 'PrintIndexAndValues

which I then call from PageLoad

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here

        'Show the Session ID
        lblSessionID.Text = "Your SessionID = " & Session.SessionID 'This shows

        PrintIndexAndValues(Session) 'This does not show

        Response.Output.Write("abcd") 'This shows
    End Sub