private void buttonAddAnswer_Click(object sender, EventArgs e)
{
FormAddAnswer form = new FormAddAnswer(dec);
form.ShowDialog();
listBoxAnswersI.DataSource = dec.GetListAnswers();
}
private void buttonAddAnswerIII_Click(object sender, EventArgs e)
{
FormAddAnswer form = new FormAddAnswer(decLabelIII);
form.ShowDialog();
labelSum3.Text = SumPoint.sumPoint3.ToString();
listBoxAnswersIII.DataSource = decLabelIII.GetListAnswers();
}