/// <summary>
/// Gets a List of all questions
/// </summary>
/// <returns>List<Questions> </returns>
public static List<Questions> GetAllQuestions()
{
List<Questions> questionList = new List<Questions>();
string selectStatement = "Select * FROM questions";
try
{
using (SqlConnection connection = BrainFartConnection.GetConnection())
{
connection.Open();
using (SqlCommand selectCommand = new SqlCommand(selectStatement, connection))
{
using (SqlDataReader reader = selectCommand.ExecuteReader())
{
while (reader.Read())
{
Questions question = new Questions();
question.QuestionID = (Int32)reader["questionID"];
question.QuestionDescrip = reader["questionDescrip"].ToString().Trim();
question.CategoryID = (Int32)reader["categoryID"];
question.DifficultyID = (Int32)reader["difficultyID"];
questionList.Add(question);
}
}
}
}
}
catch (SqlException ex)
{
throw ex;
}
catch (Exception ex)
{
throw ex;
}
return questionList;
}
/// <summary>
/// Insert a Question row to the Questions table
/// </summary>
/// <param name="question">The input Question row object</param>
/// <returns>The QuestionID for the row inserted</returns>
///
public static int AddQuestion(Questions question)
{
string insertStatement =
"INSERT Questions " +
"(QuestionDescrip, CategoryID, DifficultyID) " +
"VALUES (@QuestionDescrip, @CategoryID, @DifficultyID)";
try
{
using (SqlConnection connection = BrainFartConnection.GetConnection())
{
connection.Open();
using (SqlCommand insertCommand = new SqlCommand(insertStatement, connection))
{
insertCommand.Parameters.AddWithValue("@QuestionDescrip", question.QuestionDescrip);
insertCommand.Parameters.AddWithValue("@CategoryID", question.CategoryID);
insertCommand.Parameters.AddWithValue("@DifficultyID", question.DifficultyID);
insertCommand.ExecuteNonQuery(); // Check for using statement use
string selectStatement =
"SELECT IDENT_CURRENT('Questions') FROM Questions"; // Check for backticks instead of single quotes
using (SqlCommand selectCommand = new SqlCommand(selectStatement, connection))
{
int questionID = Convert.ToInt32(selectCommand.ExecuteScalar());
return questionID;
}
}
}
}
catch (SqlException se)
{
throw se;
}
catch (Exception ex)
{
throw ex;
}
}
private void btnSubmit_Click(object sender, EventArgs e)
{
try
{
if (Validator.IsPresent(txtQuestion) && Validator.IsPresent(txtAnswerA)
&& Validator.IsPresent(txtAnswerB) && Validator.IsPresent(txtAnswerC)
&& Validator.IsPresent(txtAnswerD) && Validator.IsPresent(cbCategory)
&& Validator.IsPresent(cbDifficulty) &&
(Validator.IsRadioButtonChecked(radioButton1, radioButton2, radioButton3, radioButton4)))
{
if (addQuestion)
{
question = new Questions();
answer1 = new Answers();
answer2 = new Answers();
answer3 = new Answers();
answer4 = new Answers();
this.putQuestionData(question);
this.putAnswerData1(answer1);
this.putAnswerData2(answer2);
this.putAnswerData3(answer3);
this.putAnswerData4(answer4);
try
{
this.question.QuestionID = BrainFartController.AddQuestion(question);
answer1.QuestionID = this.question.QuestionID;
this.answer1.AnswerID = BrainFartController.AddAnswer(answer1);
answer2.QuestionID = this.question.QuestionID;
this.answer2.AnswerID = BrainFartController.AddAnswer(answer2);
answer3.QuestionID = this.question.QuestionID;
this.answer3.AnswerID = BrainFartController.AddAnswer(answer3);
answer4.QuestionID = this.question.QuestionID;
this.answer4.AnswerID = BrainFartController.AddAnswer(answer4);
MessageBox.Show("Question submission successful");
this.BeginInvoke(new MethodInvoker(Close));
}
catch (InvalidOperationException ioe)
{
throw ioe;
}
}
else
{
newQuestion = new Questions();
this.putQuestionData(newQuestion);
try
{
if (BrainFartController.UpdateQuestion(question, newQuestion))
{
MessageBox.Show("Question Successfully updated to the system!", "BrainFart", MessageBoxButtons.OK, MessageBoxIcon.Information);
updated = true;
this.BeginInvoke(new MethodInvoker(Close));
}
}
catch (InvalidOperationException ioe)
{
throw ioe;
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
}
/// <summary>
/// Insert question information
/// </summary>
/// <param name="question"></param>
private void putQuestionData(Questions question)
{
question.QuestionID = this.question.QuestionID;
question.QuestionDescrip = txtQuestion.Text;
question.CategoryID = (int)cbCategory.SelectedValue;
question.DifficultyID = (int)cbDifficulty.SelectedValue;
}
public static bool UpdateQuestion(Questions question, Questions newQuestion)
{
throw new NotImplementedException();
}
public static int AddQuestion(Questions question)
{
return QuestionsDAL.AddQuestion(question);
}
/// <summary>
/// Gets a List of all questions in a particular category
/// </summary>
/// <returns>List<Questions> </returns>
public static List<Questions> GetQuestionsFromCategoryWithDifficulty(int categoryID, int difficultyID)
{
List<Questions> questionList = new List<Questions>();
string selectStatement = "Select * FROM questions WHERE categoryID = @categoryID AND difficultyID = @difficultyID";
try
{
using (SqlConnection connection = BrainFartConnection.GetConnection())
{
connection.Open();
using (SqlCommand selectCommand = new SqlCommand(selectStatement, connection))
{
selectCommand.Parameters.AddWithValue("categoryID", categoryID);
selectCommand.Parameters.AddWithValue("difficultyID", difficultyID);
using (SqlDataReader reader = selectCommand.ExecuteReader())
{
while (reader.Read())
{
Questions question = new Questions();
question.QuestionID = (Int32)reader["questionID"];
question.QuestionDescrip = reader["questionDescrip"].ToString().Trim();
question.CategoryID = (Int32)reader["categoryID"];
question.DifficultyID = (Int32)reader["difficultyID"];
questionList.Add(question);
}
}
}
}
}
catch (SqlException ex)
{
throw ex;
}
catch (Exception ex)
{
throw ex;
}
return questionList;
}
private void getQuestion()
{
//Get a random question from the list of questions
Random rnd = new Random();
int r = rnd.Next(this.questionList.Count);
this.question = questionList[r];
}
