Public Class UserManagement
    Const Filename As String = "Benutzerdatenbank.dat"
    'Benutzer-Struktur
    Public Structure User
        Public Username As String
        Public UserPasswordHash As String
        Public UserID As String
        Public UserGUID As String
        'Konstruktor
        Public Sub New(ByVal User As String, ByVal PasswordHash As String, _
          ByVal ID As String, ByVal GUID As String)
            Username = User
            UserPasswordHash = PasswordHash
            UserID = ID
            UserGUID = GUID
        End Sub
    End Structure
    'Eine neue Liste zum Speichern aller Benutzer
    Private ApplicationUsers As New List(Of User)
    'Parameterloser Konstruktor für die Verwendung des XML-Serializers
    Sub New()
    End Sub
    '--------------------------------- Eigenschaften 
    ' ---------------------------------
    'Liste aller Benutzer zurückgeben oder setzen
    Public Property AllUsers() As List(Of User)
        Get
            Return ApplicationUsers
        End Get
        Set(value As List(Of User))
            ApplicationUsers = value
        End Set
    End Property
'--------------------------------- Methoden ---------------------------------
    'Benutzer hinzufügen
    Public Sub AddUser(ByVal Username As String, ByVal UserPasswordHash As _
      String, ByVal UserID As String, ByVal UserGUID As String)
        AllUsers.Add(New User(Username, UserPasswordHash, UserID, UserGUID))
    End Sub
    'Benutzer löschen
    Public Sub RemoveUser(Item As User)
        AllUsers.Remove(Item)
    End Sub
    '.
    '. noch ein paar Klassenmethoden...usw.
    '.

<?xml version="1.0"?>
<UserManagement xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" _
  xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <AllUsers>
    <User>
      <Username>Testuser1</Username>
      <UserPasswordHash>665E38C633D1AC448EC477625C9CE9F003C6F4596ABBF98A2_
        5896A57327116A0</UserPasswordHash>
      <UserID>1</UserID>
      <UserGUID>814d12a1-2726-4345-a398-8c3461f5d670</UserGUID>
    </User>
  </AllUsers>
</UserManagement>