private void ButtonAnswer(object sender, EventArgs e)
{
Button btn = (Button)sender;
String questionnumber = question.questionnumber;
int answerID = Int32.Parse(btn.ClassId);
if (btn.BackgroundColor == Color.LimeGreen)
{
controller.DeleteUserAnswer(answerID);
btn.BackgroundColor = Color.Default;
}
else
{
controller.AddUserAnswer(questionnumber, answerID);
btn.BackgroundColor = Color.LimeGreen;
}
}
