private void Level10_Button_Click(object sender, RoutedEventArgs e)
{
sub.Clear();
sub = MetaData.Metadata.Level1[1].Subjects;
UISubject uISubject = new UISubject(sub);
Switcher.Switch(uISubject);
}
private void Level9_Button_Click(object sender, RoutedEventArgs e)
{
sub.Clear();
sub = MetaData.Metadata.Level1[0].Subjects;
UISubject uISubject = new UISubject(sub); // pasing 9th subject list to next ui
Switcher.Switch(uISubject);
}