/// <summary>
/// PERHAPS THE MOST IKPORTAN, WHERE QAS ARE GENERATED AND PASSWORDS TOO
/// </summary>
/// <param name="exams"> </param>
/// <param name="pr"> </param>
/// <param name="questionAnswer"></param>
/// <returns></returns>
private static string[] makeQAs(ref IEnumerable <ExamsRow> exams, ref PreferencesRow pr, out IList <string[]> questionAnswer)
{
bool showPoints = pr.showPoints;
double pointFactor = pr.Factor;
questionAnswer = new List <string[]>();
int pregunta = 1;
int claveCount = 1;
string Clave;
string questionWeight;
string qidString;
Clave = string.Empty;
questionWeight = string.Empty;
qidString = string.Empty;
foreach (DataRow row in exams)
{
string[] qAns = new string[2];
ExamsRow r = (ExamsRow)row;
string examen = string.Empty;
examen = ExtractQuestionAndWeight(ref questionWeight, ref qidString, ref pregunta, showPoints, pointFactor, ref r);
qAns[0] = examen;
string[] answers = ExtractAnswersArray(ref r);
examen = ExtractAnswers(answers, ref r);
qAns[1] = examen;
ExtractKey(ref Clave, ref claveCount, answers, ref r);
questionAnswer.Add(qAns);
}
if (qidString[qidString.Length - 1].Equals(SEP))
{
qidString = qidString.Substring(0, qidString.Length - 1); //erase last separator
}
if (questionWeight[questionWeight.Length - 1].Equals(SEP))
{
questionWeight = questionWeight.Substring(0, questionWeight.Length - 1); //erase last separator
}
questionWeight += SEP2.ToString() + pointFactor.ToString(); //KEEP THE FACTOR IN THE STRING!!!
if (Clave[Clave.Length - 1].Equals(SEP))
{
Clave = Clave.Substring(0, Clave.Length - 1); //erase last separator
}
///IMPORTANT CUMJULATIVE INFO
return(new string[3] {
Clave, questionWeight, qidString
}); // LAnswer , LQuestion,
}
/// <summary>
/// the code string for 1 exam question (already randonmized)
/// </summary>
/// <param name="qID"> </param>
/// <param name="answ"></param>
/// <returns></returns>
public string CreateExamQuestionCode(ref IEnumerable <AnswersRow> answ)
{
string aid = string.Empty;
///MAKE ORDERS, which contain the string of answersID in the order of the exam, for each questionID selected
string code = string.Empty;
//the second separator sep2 gives the AnswrID (AID) of the right answer
foreach (AnswersRow a in answ)
{
// OrderRow or = inter.IdB.Order.NewOrderRow(); inter.IdB.Order.AddOrderRow(or);
// or.QID = qID; //questionID or.AID = a.AID; //answerID
if (!a.IsCorrectNull() && a.Correct == true)
{
aid = a.AID.ToString();
}
code += a.AID.ToString() + SEP.ToString();
}
code = code.Substring(0, code.Length - 1); //without comma at the end
code += SEP2.ToString() + aid;
return(code);
}