public void UpdateQuiz(QuizData theQuiz)
{
QuestionEntity temp = new QuestionEntity();
for (int i = 0; i < theQuiz.Questions.Count; i++)
{
QuestionData questionToSave;
questionToSave = theQuiz.Questions[i];
if (questionToSave.Id == 0)
{
temp.CreateQuestion(questionToSave);
AddQuestion(theQuiz, questionToSave);
}
else
{
temp.UpdateQuestion(questionToSave);
}
}
temp.Dispose();
SQL = "UPDATE `quizzes` q SET q.`name` = \"" + theQuiz.Name + "\", q.`open_date` = \"" + theQuiz.Open.ToString("yyyy-MM-dd") + "\", q.`due_date` = \"" + theQuiz.Due.ToString("yyyy-MM-dd") + "\" WHERE q.`quiz_id` = \"" + theQuiz.Id + "\";";
InitializeCommand();
OpenConnection();
int result = ExecuteStoredProcedure();
CloseConnection();
if (result == 0)
{
throw new Exception("Unable to update the quiz on the database");
}
}
public void DeleteQuiz(QuizData theQuiz)
{
if (DataReader != null)
{
DataReader.Close();
}
QuestionEntity quest = new QuestionEntity();
for (int i = 0; i < theQuiz.Questions.Count; i++)
{
quest.DeleteQuestion(theQuiz.Questions[i]);
}
quest.Dispose();
SQL = "DELETE `quizzes`, `rel_courses_quizzes` FROM `quizzes` INNER JOIN `rel_courses_quizzes` ON `quizzes`.`quiz_id` = `rel_courses_quizzes`.`quiz_id` WHERE `quizzes`.`quiz_id` = \"" + theQuiz.Id + "\";";
InitializeCommand();
OpenConnection();
int result = ExecuteStoredProcedure();
CloseConnection();
if (result == 0)
{
throw new Exception("Could not delete the Quiz from Database");
}
}
public void CreateQuiz(QuizData theQuiz)
{
theQuiz.id = NextId;
if (DataReader != null)
{
DataReader.Close();
}
SQL = "INSERT INTO `quizzes` (`quiz_id`, `name`, `open_date`, `due_date`) VALUES " +
"(\"" + theQuiz.id + "\", \"" + theQuiz.Name + "\", \"" + theQuiz.Added.ToString("yyyy-MM-dd") +
"\", \"" + theQuiz.Due.ToString("yyyy-MM-dd") + "\");";
InitializeCommand();
OpenConnection();
int result = ExecuteStoredProcedure();
if (result == 0)
{
throw new Exception("Could Not add the quiz to the database");
}
QuestionEntity temp = new QuestionEntity();
for (int i = 0; i < theQuiz.questions.Count; i++)
{
temp.CreateQuestion(theQuiz.questions[i]);
if (DataReader != null)
{
DataReader.Close();
}
SQL = "INSERT INTO `rel_quizzes_questions` (`quiz_id`, `question_id`) VALUES (\"" +
theQuiz.id + "\", \"" + theQuiz.questions[i].id + "\");";
InitializeCommand();
OpenConnection();
result = ExecuteStoredProcedure();
if (result == 0)
{
throw new Exception("Cannot associate this question with this quiz");
}
}
CloseConnection();
}
/// <summary>
/// validates data and if good saves it
/// </summary>
/// <param name="quiz">quiz to submit</param>
/// <exception cref="Exception">data not correct.</exception>
public static void SubmitQuiz(QuizData quiz)
{
QuestionEntity temp = new QuestionEntity();
quiz.Questions.AddRange(temp.ReadQuestions(quiz));
temp.Dispose();
//Validate data
if (quiz.Due < quiz.Open)
throw new Exception("The due date must be after the open date.");
if (quiz.Questions.Count == 0)
throw new Exception("The quiz must contain at least one question.");
// Validation for questions takes place when creating the individual questions
//Now that we validated save the quiz
SaveQuiz(quiz);
}
public QuizData ReadQuiz(int id)
{
QuizData return_value = null;
if (DataReader != null)
{
DataReader.Close();
}
SQL = "SELECT * FROM `quizzes` q WHERE q.`quiz_id` = \"" + id + "\";";
InitializeCommand();
OpenConnection();
DataReader = Command.ExecuteReader();
if (DataReader.HasRows)
{
DataReader.Read();
return_value = new QuizData(DataReader.GetUInt16("quiz_id"));
return_value.Name = DataReader.GetString("name");
return_value.Added = DataReader.GetDateTime("open_date");
return_value.Due = DataReader.GetDateTime("due_date");
}
CloseConnection();
QuestionEntity temp = new QuestionEntity();
return_value.questions.AddRange(temp.ReadQuestions(return_value));
if (return_value == null)
{
throw new Exception("Could not find specified Quiz");
}
return(return_value);
}
public void CreateQuiz(QuizData theQuiz)
{
theQuiz.Id = NextId;
if (DataReader != null)
DataReader.Close();
SQL = "INSERT INTO `quizzes` (`quiz_id`, `name`, `open_date`, `due_date`) VALUES " +
"(\"" + theQuiz.Id + "\", \"" + theQuiz.Name + "\", \"" + theQuiz.Open.ToString("yyyy-MM-dd") +
"\", \"" + theQuiz.Due.ToString("yyyy-MM-dd") + "\");";
InitializeCommand();
int result = ExecuteStoredProcedure();
if (result == 0)
throw new Exception("Could Not add the quiz to the database");
QuestionEntity temp = new QuestionEntity();
for (int i = 0; i < theQuiz.Questions.Count; i++) {
temp.CreateQuestion(theQuiz.Questions[i]);
if (DataReader != null)
DataReader.Close();
SQL = "INSERT INTO `rel_quizzes_questions` (`quiz_id`, `question_id`) VALUES (\"" +
theQuiz.Id + "\", \"" + theQuiz.Questions[i].Id + "\");";
InitializeCommand();
result = ExecuteStoredProcedure();
if (result == 0)
throw new Exception("Cannot associate this question with this quiz");
}
}
public void UpdateQuiz(QuizData theQuiz)
{
QuestionEntity temp = new QuestionEntity();
for (int i = 0; i < theQuiz.Questions.Count; i++)
{
QuestionData questionToSave;
questionToSave = theQuiz.Questions[i];
if (questionToSave.Id == 0)
{
temp.CreateQuestion(questionToSave);
AddQuestion(theQuiz, questionToSave);
}
else
temp.UpdateQuestion(questionToSave);
}
temp.Dispose();
SQL = "UPDATE `quizzes` q SET q.`name` = \"" + theQuiz.Name + "\", q.`open_date` = \"" + theQuiz.Open.ToString("yyyy-MM-dd") + "\", q.`due_date` = \"" + theQuiz.Due.ToString("yyyy-MM-dd") + "\" WHERE q.`quiz_id` = \"" + theQuiz.Id + "\";";
InitializeCommand();
OpenConnection();
int result = ExecuteStoredProcedure();
CloseConnection();
if (result == 0)
throw new Exception("Unable to update the quiz on the database");
}
public void DeleteQuiz(QuizData theQuiz)
{
if (DataReader != null)
DataReader.Close();
QuestionEntity quest = new QuestionEntity();
for (int i = 0; i < theQuiz.Questions.Count; i++)
quest.DeleteQuestion(theQuiz.Questions[i]);
quest.Dispose();
SQL = "DELETE `quizzes`, `rel_courses_quizzes` FROM `quizzes` INNER JOIN `rel_courses_quizzes` ON `quizzes`.`quiz_id` = `rel_courses_quizzes`.`quiz_id` WHERE `quizzes`.`quiz_id` = \"" + theQuiz.Id + "\";";
InitializeCommand();
OpenConnection();
int result = ExecuteStoredProcedure();
CloseConnection();
if (result == 0)
throw new Exception("Could not delete the Quiz from Database");
}
public QuizView(Objective objective)
: base(objective)
{
InitializeComponent();
questionsToDeleteOnSave = new List<QuestionData>();
//set title
lblMessage.Text = GlobalData.currentQuiz.Name;
QuestionEntity temp = new QuestionEntity();
GlobalData.currentQuiz.Questions.AddRange(temp.ReadQuestions(GlobalData.currentQuiz));
//create our questions and add them
questionBoxes = new List<QuestionBox>();
for (int i = 0; i < GlobalData.currentQuiz.Questions.Count; i++)
{
QuestionBox questionBox = new QuestionBox(GlobalData.currentQuiz.Questions[i], i + 1, myObjective);
questionBox.Disposed += new EventHandler(questionBox_Disposed);
questionBoxes.Add(questionBox);
}
pnlMain.Controls.AddRange(questionBoxes.ToArray());
//add objective specific objects
#region Edit Quiz
if (myObjective == Objective.ManageQuizzes)
{
BackToolStripMenuItem.Visible = false;
//
// btnAddQuestion
//
this.btnAddQuestion = new Button();
this.btnAddQuestion.BackgroundImage = global::JiTU_CS.Properties.Resources.add_question;
this.btnAddQuestion.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom;
this.btnAddQuestion.Name = "btnAddQuestion";
this.btnAddQuestion.Size = new System.Drawing.Size(32, 32);
this.btnAddQuestion.UseVisualStyleBackColor = true;
this.btnAddQuestion.FlatAppearance.BorderSize = 0;
this.btnAddQuestion.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.btnAddQuestion.Click += new EventHandler(btnAddQuestion_Click);
pnlMain.Controls.Add(btnAddQuestion);
}
#endregion
#region Take Quiz
else if (myObjective == Objective.TakeQuiz)
{
mnsMain.Visible = false;
//
// btnSubmit
//
this.btnSubmit = new Button();
this.btnSubmit.Name = "btnSubmit";
this.btnSubmit.UseVisualStyleBackColor = true;
this.btnSubmit.Text = "Submit";
this.btnSubmit.Width = 100;
this.btnSubmit.Click += new EventHandler(btnSubmit_Click);
pnlMain.Controls.Add(btnSubmit);
}
#endregion
#region View All Results
else if (myObjective == Objective.ViewAllResults)
{
saveToolStripMenuItem.Visible = false;
discardToolStripMenuItem.Visible = false;
}
#endregion
//finish up by installing resize handler
this.pnlMain.Resize += new System.EventHandler(this.pnlMain_Resize);
}
