Option Strict On
Imports System.Xml.Serialization
Imports System.Collections.Generic
 
Public Class xmlKurs
 
    Structure Teilnehmer
        Public tnrNummer As String
        Public Person As String
        Public Punkte As String
    End Structure
 
    <Serializable()> Public Class TListe
        <XmlElement(Type:=GetType(xmlKurs), _
                    ElementName:="Psoition")> _
        Public rn As New ArrayList
    End Class
 
    <Serializable()> Public Class Position
        Public Tnr As String
        Public Teilnehmer As String
        Public Punkte As Integer
        Public Position As Integer
 
        Sub New()
 
        End Sub
        Sub New(ByVal tnr As String, ByVal Teilnehmer As String, ByVal Punkte _
          As Integer)
            Me.Tnr = tnr
            Me.Teilnehmer = Teilnehmer
            Me.Punkte = Punkte
            Me.Position = Position
 
        End Sub
 
        <Serializable()> Public Class Positionen
            <XmlElement(Type:=GetType(Position), _
                        ElementName:="Position")> _
            Public psn As New ArrayList
            Public ReadOnly Property Anzahl() As Decimal
                Get
                    Dim summiert As Decimal
                    For Each p As Position In psn
                        summiert += p.Punkte
                    Next
                    Return summiert
                End Get
            End Property
        End Class
    End Class
    Public Tnliste As String = "C:\Documents and" & _
      "Settings\pfliero1\Desktop\VBDN\Dokumente\xmlTListe.xml"
 
 
    Shared Personen As New System.Collections.Generic.List(Of Teilnehmer)
 
    Public Shared Sub Main()
 
        Dim xt As New xmlKurs
        Dim p As New Teilnehmer
        p.tnrNummer = "1001"
        p.Person = "Maximilian"
        p.Punkte = "90"
 
        Personen.Add(p)
 
        p.tnrNummer = "1002"
        p.Person = "Nora"
        p.Punkte = "99"
 
        Personen.Add(p)
 
        p.tnrNummer = "1003"
        p.Person = "Oscar"
        p.Punkte = "80"
 
        Personen.Add(p)
 
        xt.xmlSpeichern(Personen)
 
        Dim Personen2 As List(Of Teilnehmer)
        Personen2 = xt.xmlLesen
        Console.WriteLine("{0,15}{1,8}{2,15}", "Tnr", "Name", "Punkte")
        With Personen2
            For i As Integer = 0 To Personen2.Count - 1
                With .Item(i)
                    Console.WriteLine("{0,16}{1,13}{2,5}", .tnrNummer, .Person, _
                      .Punkte)
 
                End With
            Next i
        End With
        Console.WriteLine("{0,16}", p.Punkte)
        Console.ReadLine()
    End Sub
 
    Private Sub xmlSpeichern(ByVal personen As List(Of Teilnehmer))
        Dim meineSerialisierer As New XmlSerializer(GetType(List(Of  _
          Teilnehmer)))
        Dim sw As New IO.StreamWriter(Tnliste)
        meineSerialisierer.Serialize(sw, personen)
        sw.Close()
    End Sub
 
    Private Function xmlLesen() As List(Of Teilnehmer)
        Dim meineSerialisierer As New XmlSerializer(GetType(List(Of  _
          Teilnehmer)))
        Dim sr As New IO.StreamReader(Tnliste)
        Dim personen As List(Of Teilnehmer)
        personen = CType(meineSerialisierer.Deserialize(sr), List(Of  _
          Teilnehmer))
        sr.Close()
        Return personen
    End Function
 
End Class