In a VS 2005 I had problems getting to the session object. At first it looked like a security issue with IE, but that did not fix the problem. A little experimenting revealed someting weird.

The situation : fresh Virtual PC, all updates applied, no IIS.

Take this code

Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        ListBox1.Items.Add(Session.SessionID)
End Sub

It adds the seesion ID of the roundtrip to the listbox. Every roundtrip has a new ID. I need that ID to identify the session.

Trying to see more I stored something in the session.

Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
    ListBox1.Items.Add(Session.SessionID)

    Const MySessionMember As String = "JustME"
    Try
        Label1.Text = Session.Item(MySessionMember).ToString
    Catch ex As Exception
        Label1.Text = "Not found.."
    End Try
    Session.Item(MySessionMember) = TextBox1.Text

End Sub

This works perfectly and the weird thing is that the SessionID is now constant over the roundtrips. And becomes usable.

I guess this a bug /over-optimization in VWD ?

Peter