/// <summary>
/// handles ok button click event.
/// Updates external reference if question is valid
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnOK_Click(object sender, EventArgs e)
{
//validate question
if (txtQuestion.Text == "")
{
MessageBox.Show("Question does not have text!", "Invalid Question");
}
//validate answers
else if ((txtAnswer1.Text == "") ||
(txtAnswer2.Text == "") ||
(txtAnswer3.Text == "") ||
(txtAnswer4.Text == ""))
{
MessageBox.Show("All answers must have text!", "Invalid Question");
}
else if ((rbtn1.Checked == false) &&
(rbtn2.Checked == false) &&
(rbtn3.Checked == false) &&
(rbtn4.Checked == false))
{
MessageBox.Show("No correct answer has been selected!", "Invalid Question");
}
else
{
//are we creating a new question or updating an old one?
if (isNewQuestion) //new question
{
externalQuestion.Text = txtQuestion.Text;
AnswerData answer;
answer = new AnswerData(0);
answer.Text = txtAnswer1.Text;
answer.Correct = rbtn1.Checked;
externalQuestion.AddAnswer(answer);
answer = new AnswerData(0);
answer.Text = txtAnswer2.Text;
answer.Correct = rbtn2.Checked;
externalQuestion.AddAnswer(answer);
answer = new AnswerData(0);
answer.Text = txtAnswer3.Text;
answer.Correct = rbtn3.Checked;
externalQuestion.AddAnswer(answer);
answer = new AnswerData(0);
answer.Text = txtAnswer4.Text;
answer.Correct = rbtn4.Checked;
externalQuestion.AddAnswer(answer);
this.Disposed -= frmQuestion_Disposed;
this.Dispose();
}
//change the old question
else
{
externalQuestion.Text = txtQuestion.Text;
externalQuestion.Answers[0].Text = txtAnswer1.Text;
externalQuestion.Answers[0].Correct = rbtn1.Checked;
externalQuestion.Answers[1].Text = txtAnswer2.Text;
externalQuestion.Answers[1].Correct = rbtn2.Checked;
externalQuestion.Answers[2].Text = txtAnswer3.Text;
externalQuestion.Answers[2].Correct = rbtn3.Checked;
externalQuestion.Answers[3].Text = txtAnswer4.Text;
externalQuestion.Answers[3].Correct = rbtn4.Checked;
this.Disposed -= frmQuestion_Disposed;
this.Dispose();
}
}
}