Extraction automatiq contacts publics outlook

kikou a tous!!

J ai fais un ti code pour extraire les contacts du dossier public d outlook. Ca marche super bien sur les 249 premiers contacts mais apres il ne les reconné plus comme des ContactItems!! Et pourtant yen a deux bon milliers qui suivent...

Si vous avez une idée du pb... Merci d'avance!

Voici le code....

Imports System.IO
Imports System.Reflection

Module Module1

Sub Main()
Dim oOL As Microsoft.Office.Interop.Outlook.Application
Dim oNS As Microsoft.Office.Interop.Outlook.NameSpace
Dim oFolder As Microsoft.Office.Interop.Outlook.MAPIFolder
Dim oItems As Microsoft.Office.Interop.Outlook.Items
Dim oContact As Microsoft.Office.Interop.Outlook.ContactItem
Dim n As Integer

oOL = New Microsoft.Office.Interop.Outlook.Application
oNS = oOL.GetNamespace("MAPI")
oFolder = oNS.Folders("Dossiers publics")
oFolder = oFolder.Folders("Tous les dossiers publics")
oFolder = oFolder.Folders("CONTACTS")
oItems = oFolder.Items
n = 0

Dim SW As New StreamWriter("MonFichier.txt")

For Each oContact In oItems

Try
SW.WriteLine(oContact.FullName)
Catch
SW.WriteLine("!!!!!!!!!!an Error Occured!!!!!!!!!!")
End Try

Next

SW.Close()
oOL = Nothing
oNS = Nothing
oFolder = Nothing
oItems = Nothing
oContact = Nothing

End Sub

End Module

Configuration: Windows XP
Firefox 1.5.0.10