private void Start()
{
AddQuestionButton.Hide();
DeleteAnswersButton.Show();
ResetButton.Show();
NextButton.Show();
InitializeVisited();
ResetCorecteGresite();
StartButton.Hide();
IDLabel.Hide();
IDTextField.Hide();
TimeLeft = 1800;
Timp.Start();
TimeLabel.Show();
List <model.Question> questions = QuestionRepository.ReadAllQuestions();
quizController = new controller.QuizController();
QuestionNumber = 0;
DisplayQuestion(0);
}