protected (Question[], WrongAnswers[]) GenerateQuestionTables()
{
Question[] q = new Question[50];
WrongAnswers[] wa = new WrongAnswers[50];
for (int i = 0; i < 50; i++)
{
int r = new Random().Next(1, 6);
WrongAnswers tempWa = new WrongAnswers
{
Id = i + 1,
Question1 = "Question" + (i + 1),
Answer1 = "Answer" + (i + 1) + "_1",
Answer2 = "Answer" + (i + 1) + "_2",
Answer3 = "Answer" + (i + 1) + "_3"
};
wa[i] = tempWa;
q[i] = new Question
{
Id = i + 1,
Question1 = "Question" + (i + 1),
WrongAns = tempWa,
CorrectAnswer = "Correct Answer" + (i + 1),
Difficulty = r,
IsDeleted = false
};
}
return(q, wa);
}
//Das eigentliche Exam
private void Exam()
{
//Array für bereits verwendete karten
usedCards = new bool[5][];
usedCards[0] = new bool[Collections[0].Count];
usedCards[1] = new bool[Collections[1].Count];
usedCards[2] = new bool[Collections[2].Count];
usedCards[3] = new bool[Collections[3].Count];
usedCards[4] = new bool[Collections[4].Count];
int initialCardAmount = CardAmount;
//Diese For-Schleife wird aml die vom nutzer eingestellte Anzahl an Karten ausgeführt
for (int i = 0; i < CardAmount; i++)
{
if (i == 0)
{
//Zu bebegin des Exams Halbe Sekunde Pause, damit der Nutzer sich kurz auf die Frage einstellen kann
Thread.Sleep(500);
}
ProgressString = "Frage " + (i + 1) + " von " + CardAmount;
QuestionProgress = 0;
stopTask = false;
//Dieser Thread stoppt die Zeit
progressThread = new Thread(new ThreadStart(() => startTime(this.time)));
GetNextCard(); //Neue Karte wird geholt
progressThread.Start();
Question = currentCard.Front.Text;
progressThread.Join(); //Warten bis die Zeit abgelaufen ist (oder bis die Frage korrekt beantwortet wurde)
ExamProgress = 100f / CardAmount * (i + 1);
if (!stopTask)
{
//Wurde die Frage nicht richtig beantwortet, wird Sie der WrongAnswerCollection hinzugefügt
dispatcher.Invoke(() => WrongAnswers.Add(currentCard));
}
else
{
BoxColor = "Green";
stopTask = false;
}
Thread.Sleep(500); //Pause Nach einer Frage
Answer = "";
BoxColor = "White";
}
CanStop = false;
VisabilityExamUi = "Hidden";
QuestionProgress = 0;
ExamProgress = 0;
EnableSettings = true;
CanStart = true;
ExamStarted = false;
ProgressString = "";
Question = "";
Statistics(initialCardAmount);
}
// Die Methode startet die Prüfung, wird nach klick auf "start" ausgeführt
private void StartExam()
{
VisabilityStatUi = "Hidden";
WrongAnswers.Clear();
SelectedWrongQuestion = "";
SelectedWrongAnswer = "";
ExamStarted = true;
VisabilityExamUi = "Visable";
EnableSettings = false;
CanStart = false;
CanStop = true;
//Hier wird der Thread gestartet, auf dem das Exam läuft
examThread = new Thread(new ThreadStart(() => Exam()));
examThread.Start();
}
public async Task <bool> UpdateQuestion(Models.Question question)
{
var currentQuestion = await _quizManagerContext.Questions.Include(x => x.CorrectAnswer)
.Include(y => y.WrongAnswers)
.ThenInclude(z => z.Answers)
.FirstOrDefaultAsync(q => q.Id == question.Id);
if (currentQuestion != null)
{
currentQuestion.QuestionString = question.QuestionText;
currentQuestion.CorrectAnswer = new Answer {
AnswerText = question.CorrectAnswer
};
var newWrongAnswers = new WrongAnswers
{
Answers = new List <Answer>()
};
foreach (var answer in question.WrongAnswers)
{
var newWrongAnswer = new Answer
{
AnswerText = answer
};
newWrongAnswers.Answers.Add(newWrongAnswer);
}
currentQuestion.WrongAnswers = newWrongAnswers;
try
{
await _quizManagerContext.SaveChangesAsync();
return(true);
}
catch (Exception)
{
return(false);
}
}
return(false);
}
