//method clear all list boxes ansd labels
public void ClearAllText()
{
CorrectAnswerData.Clear();
StudentAnswerData.Clear();
IncorrectAnswerData.Clear();
Result = "";
CorrectMarks = "";
IncorrectMarks = "";
LabelColor = new SolidColorBrush(Color.FromArgb(255, 255, 255, 255));
}
//method Compare two sets of question from saved files and show result
public void Compare()
{
if (selectedFileName == "")
{
MessageBox.Show("Please Select a sample file");
return;
}
else
{
string[] correctAnswerDataArray = File.ReadAllLines("correctAnswer.txt");
string[] studentAnswerDataArray = File.ReadAllLines(selectedFileName);
int correctcount = 0;
int incorrectcount = 0;
for (int i = 0; i < correctAnswerDataArray.Length; i++)
{
CorrectAnswerData.Add(correctAnswerDataArray[i]);
StudentAnswerData.Add(studentAnswerDataArray[i]);
if (correctAnswerDataArray[i] == studentAnswerDataArray[i])
{
correctcount++;
}
else
{
incorrectcount++;
string[] spliteElementArray = studentAnswerDataArray[i].Split('.');
IncorrectAnswerData.Add(spliteElementArray[0]);
}
}
if (correctcount < PASSING_MARK)
{
Result = $"Sorry you didn't pass the exam.";
LabelColor = new SolidColorBrush(Color.FromArgb(255, 255, 0, 0));
}
else
{
Result = $"Congratulations!! You have passed the exam.";
LabelColor = new SolidColorBrush(Color.FromArgb(255, 0, 255, 0));
}
CorrectMarks = $"Total number of correct answers= {correctcount}";
IncorrectMarks = $"Total number of incorrect answers= {incorrectcount}";
}
}
void ConfirmAnswers(object sender, RoutedEventArgs arg)
{
try
{
sQLiteConnection = new SQLiteConnection(@"Data Source=..\TestDB.db;Version=3;");
if (list == null || currentTestQuestionData == null)
{
throw new Exception("Question List or Question Data are not initialized!\nFatal Error!");
}
List <IncorrectAnswerData> incorrectAnswerDatas = new List <IncorrectAnswerData>();
foreach (QuestionData qData in currentTestQuestionData)
{
List <int> checkedAnswers = new List <int>();
List <int> correctAnswers = new List <int>();
foreach (CheckBox check in qData.AnswerCheckBoxes)
{
if ((bool)check.IsChecked)
{
checkedAnswers.Add(
Convert.ToInt32(check.Name.Split('_')[1].ToString())
);
}
}
sQLiteConnection.Open();
SQLiteCommand sCommand = new SQLiteCommand(sQLiteConnection)
{
CommandText = "select CorrectAnswers.answerId AS Odgovor from CorrectAnswers where CorrectAnswers.questonId = " + qData.QuestionId.ToString()
};
SQLiteDataReader sQ = sCommand.ExecuteReader();
while (sQ.Read())
{
correctAnswers.Add(sQ.GetInt32(0));
}
var answerCheck = checkedAnswers.Except(correctAnswers).ToList();
int emptyCheck = correctAnswers.Except(checkedAnswers).ToList().Count;
if (answerCheck.Count > 0)
{
IncorrectAnswerData incorrect = new IncorrectAnswerData()
{
QuestionText = qData.QuestionText,
AnswerText = new List <string>()
};
int i = 0;
foreach (var answer in answerCheck)
{
while (answer != Convert.ToInt32(qData.AnswerCheckBoxes[i].Name.Split('_')[1].ToString()))
{
i++;
}
incorrect.AnswerText.Add(((TextBlock)qData.AnswerCheckBoxes[i].Content).Text);
}
incorrectAnswerDatas.Add(incorrect);
}
else if (answerCheck.Count == 0 && emptyCheck > 0)
{
IncorrectAnswerData incorrect = new IncorrectAnswerData()
{
QuestionText = qData.QuestionText,
AnswerText = new List <string>()
};
incorrect.AnswerText.Add("Question left empty");
incorrectAnswerDatas.Add(incorrect);
}
sQLiteConnection.Close();
}
if (incorrectAnswerDatas.Count > 0)
{
string builder = "";
foreach (var incorrectAnswer in incorrectAnswerDatas)
{
builder += incorrectAnswer.QuestionText;
builder += "\n";
foreach (var error in incorrectAnswer.AnswerText)
{
builder += "- " + error + "\n";
}
builder += "------------------------------------\n";
}
builder += "\n " + (10 - incorrectAnswerDatas.Count) + "/10 correct answers \n";
new ErrorWindow("Incorrect Answers!", builder).ShowDialog();
}
else if (incorrectAnswerDatas.Count == 0)
{
new ErrorWindow("Congratulations!", "Everything is correct!").ShowDialog();
}
}
catch (Exception ex)
{
new ErrorWindow("Fatal error", ex.Message).ShowDialog();
}
finally
{
QuestionContainer.Visibility = Visibility.Hidden;
GenerateTestButton.Visibility = Visibility.Visible;
list = null;
currentTestQuestionData = null;
foreach (var panel in questionStackPanelList)
{
QuestionContainer.Children.Remove(panel);
}
QuestionContainer.Children.Remove(confirmationButton);
}
}
