Friend WithEvents Gruppe1 As RAS_Terminal_Programm.Gruppe        
...
Me.Gruppe1 = New RAS_Terminal_Programm.Gruppe
...
CType(Me.Gruppe1, System.ComponentModel.ISupportInitialize).BeginInit()
...
Me.ComboBox1.DataBindings.Add(New System.Windows.Forms.Binding("SelectedItem", _
  Me.Gruppe1, "connectiongroup.id"))
...
'Gruppe1
'
Me.Gruppe1.DataSetName = "Gruppe"
Me.Gruppe1.Locale = New System.Globalization.CultureInfo("de-DE")
...
Me.ComboBox2.DataBindings.Add(New System.Windows.Forms.Binding("SelectedValue", _
  Me.Gruppe1, "verbindung.name"))
Me.ComboBox2.DataBindings.Add(New System.Windows.Forms.Binding("Text", _
Me.Gruppe1, "verbindung.name"))
Me.ComboBox2.DataSource = Me.Gruppe1.verbindung
...
CType(Me.Gruppe1, System.ComponentModel.ISupportInitialize).EndInit()