//___________________Adds a user from input from user, tests user ID and passes userObj to InsertToDb method_________
private void addUserButt_Click(object sender, EventArgs e)
{
if (Housekeeping.CheckAllFields(this))
{
if (int.TryParse(userIDTxt.Text, out int ret)) //only accept int type for user ID
{
if (!test.UserObjDictionary.ContainsKey(int.Parse(userIDTxt.Text))) //Check user ID doesnt already exist
{
switch (accessGrpCbox.SelectedIndex)
{
case 0:
{
user = new AdminObj();
break;
}
case 1:
{
user = new LecturerObj();
break;
}
case 2:
{
user = new StudentObj();
break;
}
default:
{
break;
}
}
user.UserID = int.Parse(userIDTxt.Text);
user.Name = nameTxt.Text;
user.Surname = surnameTxt.Text;
user.Password = passwordTxt.Text;
DatabaseUtilities.InsertToDB("Users", user);
Housekeeping.ResetForm(this);
//invoke delegate
OnUserAdded(this, null);
}
else
{
MessageBox.Show("User ID already exists!", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
else
{
MessageBox.Show("User ID can only contain numbers!", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
else
{
MessageBox.Show("ALL FIELDS ARE REQUIRED!", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
//_______________________on click method to save the test calls on close method__________________________________________
private void saveAndExitButt_Click(object sender, EventArgs e)
{
if (Housekeeping.CheckAllFields(this))
{
nextQuesButt_Click(sender, e);
this.Close();
}
else
{
this.Close();
}
}
//______________________on click method to save the current question and move to next___________________________________
private void nextQuesButt_Click(object sender, EventArgs e)
{
string correctAns = "";
if (Housekeeping.CheckAllFields(this))
{
if (ansARB.Checked)
{
correctAns = "A";
}
else
if (ansBRB.Checked)
{
correctAns = "B";
}
else
if (ansCRB.Checked)
{
correctAns = "C";
}
else
if (ansDRB.Checked)
{
correctAns = "D";
}
test.QuestionID++;
test.addQuestion(test.QuestionID, questionTxt.Text, test.NewTestID, ansATxt.Text, ansBTxt.Text, ansCTxt.Text, ansDTxt.Text, correctAns);
questionCounter++;
questionLbl.Text = "Question " + questionCounter + ":";
Housekeeping.ResetForm(this);
}
else
{
MessageBox.Show("ALL FIELDS ARE REQUIRED!", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
//__________________On click method populates next question and saves previous answer___________________________________
private void nextQuestButt_Click(object sender, EventArgs e)
{
//if list of marks from selected test does NOT contain Current UserID the user has not already taken the test
if (!test.MarksDictionary.Values.Where(n => n.TestID == ((KeyValuePair <int, String>)testsCbox.SelectedItem).Key).Any(n => n.UserID == User.UserID))
{
//if combobox for test selection is still visible test has not started yet.
if (testsCbox.Visible)
{
test.ChosenTestID = ((KeyValuePair <int, String>)testsCbox.SelectedItem).Key;
test.TestName = test.TestsDictionary[test.ChosenTestID];
test.PopulateTestQuestions();
questionCount = test.MinValue - 1;
PopulateNextQuest(sender);
this.Text = test.TestName;
testsCbox.Visible = false;
questionLbl.Visible = true;
radButtPnl.Visible = true;
nextQuestButt.Text = "Next Question";
}
else
{
//if answer not selected
if (Housekeeping.CheckAllFields(radButtPnl))
{
//if final question
if (questionCount == test.MaxValue)
{
setLearnerAns();
test.addToMemo(questionCount, learnerAns, learnerAnsString);
test.addToMarks();
Thread thread = new Thread(new ThreadStart(test.saveAnswers));
thread.Start();
memoCount++;
questionCount++;
if (test.TestMark.MarkPercent >= 50)
{
MessageBox.Show("Congratulations you got " + test.TestMark.MarkInt + "/" + test.NumberOfQuestions + " answers correct giving you " + test.TestMark.MarkPercent + "%", "Pass", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("Unfortunately you only got " + test.TestMark.MarkInt + "/" + test.NumberOfQuestions + " answers correct giving you " + test.TestMark.MarkPercent + "%", "Fail", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else
{
//if less than final question
if (questionCount < test.MaxValue)
{
if (questionCount == test.MaxValue - 1)
{
nextQuestButt.Text = "Save and Submit";
}
setLearnerAns();
test.addToMemo(questionCount, learnerAns, learnerAnsString);
PopulateNextQuest(sender);
Housekeeping.ResetForm(radButtPnl);
}
}
}
else
{
MessageBox.Show("Please select an answer!", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
//if test complete but memo not
if (memoCount > 0 && memoCount <= test.NumberOfQuestions)
{
//if first memo question
if (memoCount == 1)
{
//if user selects yes to view memo
if (MessageBox.Show("Would you like to view the Memo?", "View Memo", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
ansARb.Visible = false;
ansBRb.Visible = false;
ansCRb.Visible = false;
ansDRb.Visible = false;
correctAnsLbl.Visible = true;
youAnsLbl.Visible = true;
testAnsLbl.Visible = true;
learnerAnsLbl.Visible = true;
nextQuestButt.Text = "Next Question";
}
else
{
this.Close();
}
}
//if memo not complete but not first question
else
{
//if second last memo question
if (memoCount == test.NumberOfQuestions)
{
nextQuestButt.Text = "Exit";
}
else
{
//if memo final question
if (memoCount > test.NumberOfQuestions)
{
this.Close();
}
}
}
PopulateNextMemo();
}
else
{ //if memo final question
if (memoCount > test.NumberOfQuestions)
{
this.Close();
}
}
}
else
{
MessageBox.Show("You have already taken this test.", "Nope", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}