public MainWindow()
{
InitializeComponent();
base.DataContext = model.BewertungenModels;
Coach.ItemsSource = (from x in Lernende.GetLernende()
select x.Coach).Distinct();
}
private void Coach_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
ComboBox comboBox = (ComboBox)sender;
Lernender.ItemsSource = from x in Lernende.GetLernende()
where x.Coach == comboBox.SelectedItem.ToString()
select x;
}
