private void button30_Click(object sender, System.EventArgs e)
 {
     Question question = questionListBox.SelectedItem as Question;
     if (question == null)
     {
         return;
     }
     QuestionForm questionForm = new QuestionForm(question);
     if (questionForm.ShowDialog() == DialogResult.OK)
     {
         _baseWorker.ChangeQuestion(question, questionForm.Question);
         RefreshQuestions();
     }
 }
 private void button28_Click(object sender, System.EventArgs e)
 {
     QuestionForm questionForm = new QuestionForm();
     if (questionForm.ShowDialog() == DialogResult.OK)
     {
         Question question = questionForm.Question;
         _baseWorker.AddQuestion(question);
         RefreshQuestions();
     }
 }