// Constructors
public QuizVM()
{
quiz = new Quiz();
}
public QuizVM(Quiz quiz)
{
this.quiz = quiz;
CreateObservable(quiz);
AddCommand = new RelayCommand(AddQuestion);
}
public void CreateObservable(Quiz quiz)
{
IEnumerable<Question> selectedQuizQuestionResult = MainViewModel.context.Question.Where(vr => vr.QuizId == quiz.Id).ToList();
IEnumerable<QuestionVM> selectedQuizVragen = selectedQuizQuestionResult.Select(pk => new QuestionVM(pk));
QuestionList = new ObservableCollection<QuestionVM>(selectedQuizVragen);
}