private void SubmitAnswer_Click(object sender, RoutedEventArgs e)
{
ExControl.NextExerciseVisible();
List<bool> choiceList = parseToList(MultipleChoiceAnswerInput.SelectedItems);
MultipleChoiceAnswerInput.SelectedItems.Clear();
if (choiceList.Count == 0) return;
AnswerList<bool> ans = new AnswerList<bool>(choiceList);
bool correctAnswer = true;
bool[] feedback = ans.GetFeedback(App.ViewModel.CurrentSolution.Answer as AnswerList<bool>);
StringBuilder headerBuilder = new StringBuilder();
StringBuilder builder = new StringBuilder();
for (int i = 0; i < feedback.Length; ++i)
{
if (!feedback[i])
{
correctAnswer = false;
break;
}
}
var currentExerciseId = App.ViewModel.Exercises[App.ViewModel.CurrentQuestionNumber].ID;
if (correctAnswer)
{
App.ViewModel.AddAnswer(currentExerciseId, true);
App.ViewModel.CorrectAnswers++;
App.ViewModel.AddAnswer(true);
headerBuilder.Append("Correct!");
builder.Append("");
ExControl.CorrectAnswerMediaElement.Play();
}
else
{
App.ViewModel.AddAnswer(currentExerciseId, false);
App.ViewModel.AddAnswer(false);
headerBuilder.Append("You're wrong :-(");
builder.Append("Explanation:\n");
for (int i = 0; i < feedback.Length; ++i)
{
builder.Append(i + 1);
if (feedback[i])
{
builder.Append("). OK\n");
}
else
{
builder.Append("). Wrong!");
builder.AppendLine();
}
}
ExControl.WrongAnswerMediaElement.Play();
}
MultipleChoiceAnswerInput.Visibility = Visibility.Collapsed;
ExControl.SubmitAnswerClick(headerBuilder, builder);
}