public QuestionListVM(Quiz quiz)
{
questionContext = new QuestionDBAccess();
categoryContext = new CategoryDBAcess();
answerContext = new AnswerDBAccess();
this.quiz = quiz;
SelectedQuestion = new QuestionVM();
SelectedAnswer = new AnswerVM();
if (quiz.Questions == null)
{
Questions = new ObservableCollection <QuestionVM>();
}
else
{
Questions = new ObservableCollection <QuestionVM>(quiz.Questions.Select(q => new QuestionVM(q)));
}
Categories = new ObservableCollection <CategoryVM>(categoryContext.All().Select(c => new CategoryVM(c)));
SaveQuestion = new RelayCommand(saveQuestion, canSave);
DeleteQuestion = new RelayCommand(removeQuestion, canRemove);
ClearQuestion = new RelayCommand(clearQuestion, canClear);
SaveAnswer = new RelayCommand(saveAnswer, canSaveAnswer);
DeleteAnswer = new RelayCommand(deleteAnswer, canDelete);
ClearAnswer = new RelayCommand(clearAnswer, canClear);
}
public GameVM(Quiz quiz)
{
this.quiz = quiz;
CurrentQuestion = new QuestionVM(quiz.Questions.First());
currentQuestionIndex = 1;
currentScore = 0;
IsFinished = false;
SelectAnswer = new RelayCommand(selectAnswer, canSelect);
}
public void NextQuestion()
{
if (currentQuestionIndex < quiz.Questions.Count())
{
CurrentQuestion = new QuestionVM(quiz.Questions.ElementAt(currentQuestionIndex));
currentQuestionIndex++;
}
else
{
IsFinished = true;
CurrentQuestion = new QuestionVM();
}
}
private void clearQuestion(object parameter)
{
SelectedQuestion = new QuestionVM();
}
private void removeQuestion(object parameter)
{
questionContext.Delete(_question.Question);
Questions.Remove(_question);
SelectedQuestion = new QuestionVM();
}