// updateing
public void Update(Exam entityToUpdate)
{
string titleNoSpace = entityToUpdate.Title;
foreach (var c in titleNoSpace)
{
titleNoSpace = titleNoSpace.Replace(" ", string.Empty);
}
XElement xEntity = new XElement($"{titleNoSpace}_{entityToUpdate.Id}");
XElement xQuestions = new XElement("Questions");
foreach (var question in entityToUpdate.Questions)
{
if (question is MultipleChoiceTextQuestion)
{
MultipleChoiceTextQuestion multipleText = question as MultipleChoiceTextQuestion;
XElement xAnswers = new XElement("Answers");
int i = 0;
foreach (string answer in multipleText.Answers)
{
xAnswers.Add(new XElement($"Answer_{i}", answer));
i++;
}
XElement xQuestion = new XElement("MultipleChoiseTextQuestion", new object[] {
new XElement("QuestionDescription", multipleText.QuestionDescription),
new XElement("QuestionText", multipleText.QuestionText),
xAnswers,
new XElement("RightAnswer", multipleText.RightAnswer),
new XElement("Points", multipleText.Points)
});
xQuestions.Add(xQuestion);
}
else if (question is OpenQuestion)
{
OpenQuestion openQuestion = question as OpenQuestion;
XElement xQuestion = new XElement("OpenQuestion", new object[] {
new XElement("QuestionDescription", openQuestion.QuestionDescription),
new XElement("QuestionText", openQuestion.QuestionText),
new XElement("RightAnswer", openQuestion.RightAnswer),
new XElement("Points", openQuestion.Points)
});
xQuestions.Add(xQuestion);
}
}
xEntity.Add(xQuestions);
var dirPath = Directory.GetCurrentDirectory();
string fileName = ($"{titleNoSpace}_{entityToUpdate.Id}.xml");
if (!Directory.Exists($"{dirPath}\\ExamsQuestions"))
{
Directory.CreateDirectory($"{dirPath}\\ExamsQuestions");
}
var filePath = $"{dirPath}\\ExamsQuestions\\{fileName}";
xEntity.Save(filePath);
entityToUpdate.QuestionsPath = fileName;
GetById(entityToUpdate.Id);
}
public static void LoadExamQuestions(Exam exam)
{
string dirpath = Directory.GetCurrentDirectory();
string filePath = dirpath + "\\" + exam.QuestionsPath;
try
{
var xml = XDocument.Load(filePath);
XElement elementXml = XElement.Parse(xml.ToString());
// exam.Title = elementXml.Name.ToString().Replace("_", " ");
var questionsElement = elementXml.Elements();
foreach (var xQuestion in questionsElement.Elements())
{
IQuestion question;
if (xQuestion.Name == "MultipleChoiseTextQuestion")
{
question = new MultipleChoiceTextQuestion();
var answers = xQuestion.Element("Answers");
foreach (var answer in answers.Elements())
{
(question as MultipleChoiceTextQuestion).Answers.Add(answer.Value);
}
}
else
{
question = new OpenQuestion();
}
question.Points = double.Parse(xQuestion.Element("Points").Value);
question.RightAnswer = xQuestion.Element("RightAnswer").Value;
question.QuestionDescription = xQuestion.Element("QuestionDescription").Value;
question.QuestionText = xQuestion.Element("QuestionText").Value;
if (xQuestion.Element("Image_Id") != null)
{
using (var unit = new UnitOfWork(new ExamContext()))
{
int imageId = int.Parse(xQuestion.Element("Image_Id").Value);
QImage qImgModel = unit.QImages
.Find(img => (img.ExamId == exam.Id) && (img.Id == imageId))
.ToList()[0];
question.QuestionImage = ByteArrayToImage(qImgModel.QuestionImage);
}
}
exam.Questions.Add(question);
}
}
catch
{
}
}
// getting
public Exam GetById(object id)
{
Exam exam = new Exam();
var dirPath = Directory.GetCurrentDirectory();
var filePath = Directory.GetFiles($"{dirPath}\\ExamsQuestions", $"*{id}*");
if (filePath.Count() != 0)
{
var xml = XDocument.Load(filePath[0]);
XElement elementXml = XElement.Parse(xml.ToString());
exam.Title = elementXml.Name.ToString().Replace("_", " ");
var questionsElement = elementXml.Elements();
foreach (var question in questionsElement.Elements())
{
if (question.Name == "MultipleChoiseTextQuestion")
{
MultipleChoiceTextQuestion multipleChoise = new MultipleChoiceTextQuestion();
multipleChoise.QuestionText = question.Element("QuestionText").Value;
multipleChoise.Points = double.Parse(question.Element("Points").Value);
multipleChoise.RightAnswer = question.Element("RightAnswer").Value;
var answers = question.Element("Answers");
foreach (var answer in answers.Elements())
{
multipleChoise.Answers.Add(answer.Value);
}
exam.Questions.Add(multipleChoise);
}
else if (question.Name == "OpenQuestion")
{
OpenQuestion openQuestion = new OpenQuestion();
openQuestion.QuestionText = question.Element("QuestionText").Value;
openQuestion.Points = double.Parse(question.Element("Points").Value);
openQuestion.RightAnswer = question.Element("RightAnswer").Value;
openQuestion.QuestionDescription = question.Element("QuestionDescription").Value;
exam.Questions.Add(openQuestion);
}
}
}
return(exam);
}
public static void CreateQuestionsFile(Exam exam)
{
string titleNoSpace = exam.Title;
foreach (var c in titleNoSpace)
{
titleNoSpace = titleNoSpace.Replace(" ", string.Empty);
}
XElement xEntity = new XElement($"{titleNoSpace}_{exam.Id}");
XElement xQuestions = new XElement("Questions");
int index = 0;
foreach (var question in exam.Questions)
{
if (question is MultipleChoiceTextQuestion)
{
MultipleChoiceTextQuestion multipleText = question as MultipleChoiceTextQuestion;
XElement xAnswers = new XElement("Answers");
int i = 0;
foreach (string answer in multipleText.Answers)
{
xAnswers.Add(new XElement($"Answer_{i}", answer));
i++;
}
XElement xQuestion = new XElement("MultipleChoiseTextQuestion", new object[] {
new XElement("QuestionDescription", multipleText.QuestionDescription),
new XElement("QuestionText", multipleText.QuestionText),
xAnswers,
new XElement("RightAnswer", multipleText.RightAnswer),
new XElement("Points", multipleText.Points)
});
if (multipleText.QuestionImage != null)
{
xQuestion.Add(new XElement("Image_Id", index));
}
xQuestions.Add(xQuestion);
}
else if (question is OpenQuestion)
{
OpenQuestion openQuestion = question as OpenQuestion;
XElement xQuestion = new XElement("OpenQuestion", new object[] {
new XElement("QuestionDescription", openQuestion.QuestionDescription),
new XElement("QuestionText", openQuestion.QuestionText),
new XElement("RightAnswer", openQuestion.RightAnswer),
new XElement("Points", openQuestion.Points)
});
if (openQuestion.QuestionImage != null)
{
xQuestion.Add(new XElement("Image_Id", index));
}
xQuestions.Add(xQuestion);
}
index++;
}
xEntity.Add(xQuestions);
//var dirPath = Directory.GetCurrentDirectory();
string fileName = ($"{titleNoSpace}_{exam.Id}.xml");
string dirName = "ExamsQuestions";
var filePath = SetFilePath(fileName, dirName);
xEntity.Save(filePath);
exam.QuestionsPath = $"{dirName}\\{fileName}";
}
public static void LoadMocData()
{
Classroom class1 = new Classroom();
class1.Id = 0;
class1.Name = "Math";
#region Math Classroom Exam1
#region Exam 1 Questions
MultipleChoiceTextQuestion q1 = new MultipleChoiceTextQuestion();
MultipleChoiceTextQuestion q2 = new MultipleChoiceTextQuestion();
OpenQuestion q3 = new OpenQuestion();
MultipleChoiceTextQuestion q4 = new MultipleChoiceTextQuestion();
OpenQuestion q5 = new OpenQuestion();
q1.Answers.Add("16");
q1.Answers.Add("10");
q1.Answers.Add("18");
q1.Answers.Add("8");
q1.RightAnswer = "0";
q1.QuestionText = "How much is 4*4?";
q1.Points = 20;
q2.Answers.Add("2x+2x");
q2.Answers.Add("x^2+y^2");
q2.Answers.Add("x^2+2xy+y^2");
q2.Answers.Add("2x+2xy+2y");
q2.RightAnswer = "2";
q2.QuestionText = "How much is (x+y)^2";
q2.Points = 20;
q3.Points = 20;
q3.QuestionDescription = "Fill in the blank";
q3.QuestionText = "4*_=8";
q3.RightAnswer = "2";
q4.Answers.Add("1");
q4.Answers.Add("2");
q4.Answers.Add("3");
q4.Answers.Add("4");
q4.Answers.Add("0");
q4.Points = 20;
q4.QuestionText = "How much is 2/2";
q4.RightAnswer = "0";
q5.QuestionDescription = "Fill in the blank";
q5.Points = 20;
q5.QuestionText = "1_1=2";
q5.RightAnswer = "+";
#endregion Exam 1 Questions
Exam exam1 = new Exam();
exam1.Title = "Simple Math Test";
exam1.Id = 0;
exam1.ClassroomId = 0;
exam1.Questions.Add(q1);
exam1.Questions.Add(q2);
exam1.Questions.Add(q3);
exam1.Questions.Add(q4);
exam1.Questions.Add(q5);
exams.Add(exam1);
#endregion
#region Math Classroom Exam2
#region Exam 2 Questions
MultipleChoiceTextQuestion q21 = new MultipleChoiceTextQuestion();
MultipleChoiceTextQuestion q22 = new MultipleChoiceTextQuestion();
OpenQuestion q23 = new OpenQuestion();
MultipleChoiceTextQuestion q24 = new MultipleChoiceTextQuestion();
q21.Answers.Add("16");
q21.Answers.Add("10");
q21.Answers.Add("18");
q21.Answers.Add("8");
q21.RightAnswer = "3";
q21.QuestionText = "How much is 2^3?";
q21.Points = 25;
q22.Answers.Add("2x-2x");
q22.Answers.Add("x^2-y^2");
q22.Answers.Add("x^2-2xy-y^2");
q22.Answers.Add("x^2-2xy+y^2");
q22.Answers.Add("2x+2xy+2y");
q22.RightAnswer = "3";
q22.QuestionText = "How much is (x-y)^2";
q22.Points = 25;
q23.Points = 25;
q23.QuestionDescription = "Fill in the blank";
q23.QuestionText = "4*_=16";
q23.RightAnswer = "4";
q24.Answers.Add("1");
q24.Answers.Add("2");
q24.Answers.Add("3");
q24.Answers.Add("4");
q24.Answers.Add("0");
q24.Points = 25;
q24.QuestionText = "How much is 4/2";
q24.RightAnswer = "1";
#endregion Exam 2 Questions
Exam exam2 = new Exam();
exam2.Title = "Simple Math Test2";
exam2.Id = 1;
exam2.ClassroomId = 0;
exam2.Questions.Add(q21);
exam2.Questions.Add(q22);
exam2.Questions.Add(q23);
exam2.Questions.Add(q24);
exams.Add(exam2);
#endregion
Classroom class2 = new Classroom();
class2.Id = 1;
class2.Name = "Programming";
#region Programming Classroom Exam3
#region Exam 3 Questions
MultipleChoiceTextQuestion q31 = new MultipleChoiceTextQuestion();
MultipleChoiceTextQuestion q32 = new MultipleChoiceTextQuestion();
OpenQuestion q33 = new OpenQuestion();
q31.Answers.Add("11");
q31.Answers.Add("9");
q31.Answers.Add("10");
q31.RightAnswer = "2";
q31.QuestionText = "What is the value of b?" +
"\r\n int a = 10;" +
"\r\n int b =a;" +
"\r\n a++;";
q31.Points = 20;
q32.Answers.Add("bool");
q32.Answers.Add("string");
q32.Answers.Add("int");
q32.Answers.Add("double");
q32.RightAnswer = "0";
q32.QuestionText = "What varient is either true of false?";
q32.Points = 40;
q33.Points = 40;
q33.QuestionDescription = "Fill in the blank";
q33.QuestionText = "______ str = \"This is a string\";";
q33.RightAnswer = "string";
#endregion Exam 1 Questions
Exam exam3 = new Exam();
exam3.Title = "Simple Programming Test";
exam3.Id = 2;
exam3.ClassroomId = 1;
exam3.Questions.Add(q31);
exam3.Questions.Add(q32);
exam3.Questions.Add(q33);
exams.Add(exam3);
#endregion
}