public string insert_answer(AnswerProvider answer)
{
string user_message;
SqlConnection sqlConnection = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["connection"].ConnectionString);
try
{
SqlCommand sqlCmd = new SqlCommand("[answered_question]", sqlConnection);
sqlCmd.CommandType = CommandType.StoredProcedure;
sqlCmd.Parameters.Add("@student_results_fk_student", SqlDbType.Int).Value = answer.student_results_fk_student;
sqlCmd.Parameters.Add("@student_results_fk_question", SqlDbType.Int).Value = answer.student_results_fk_question;
sqlCmd.Parameters.Add("@student_results_selected_answer", SqlDbType.NVarChar, 200).Value = answer.student_results_selected_answer;
sqlCmd.Parameters.Add("@student_results_date", SqlDbType.DateTime).Value = answer.student_results_date;
sqlConnection.Open();
sqlCmd.ExecuteNonQuery();
return(user_message = "Answer Submitted!");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(user_message = "Failure!");
}
finally
{
sqlConnection.Close();
}
}
private void bt_submit_Click(object sender, RoutedEventArgs e)
{
try
{
if (rbt_answer_a.IsChecked == true)
{
selected_answer = Convert.ToString(rbt_answer_a.Content);
}
else if (rbt_answer_b.IsChecked == true)
{
selected_answer = Convert.ToString(rbt_answer_b.Content);
}
else if (rbt_answer_c.IsChecked == true)
{
selected_answer = Convert.ToString(rbt_answer_c.Content);
}
else if (rbt_answer_d.IsChecked == true)
{
selected_answer = Convert.ToString(rbt_answer_d.Content);
}
if (selected_answer.Equals(correct_answer))
{
current_score++;
lbl_score.Content = "Score : " + Convert.ToString(current_score);
}
next_question_number = connect.returnconnection_string("SELECT min(question_id) FROM Questions WHERE question_fk_course =" + current_course_id + " AND question_id > " + question_key);
if (next_question_number.Equals(""))
{
AnswerProvider answer = new AnswerProvider();
answer.student_results_fk_student = StudentLogin.student_uid;
answer.student_results_fk_question = question_key;
answer.student_results_selected_answer = selected_answer;
answer.student_results_date = System.DateTime.Now;
AnswerHandler answerHandler = new AnswerHandler();
string user_message = answerHandler.insert_answer(answer);
ScoreProvider score = new ScoreProvider();
score.student_course_fk_student_uid = StudentLogin.student_uid;
score.student_course_fk_course_id = current_course_id;
score.student_course_grade = Convert.ToDecimal(current_score / total_questions);
ScoreHandler scoreHandler = new ScoreHandler();
string use_message = scoreHandler.insert_score(score);
MessageBox.Show(user_message);
MessageBox.Show("Exam is over. Please wait.");
TestSelector testSelector = new TestSelector();
testSelector.Show();
}
else
{
AnswerProvider answer = new AnswerProvider();
answer.student_results_fk_student = StudentLogin.student_uid;
answer.student_results_fk_question = question_key;
answer.student_results_selected_answer = selected_answer;
answer.student_results_date = System.DateTime.Now;
AnswerHandler answerHandler = new AnswerHandler();
string user_message = answerHandler.insert_answer(answer);
MessageBox.Show(user_message);
load_page(current_course_id);
}
}
catch (Exception)
{
MessageBox.Show("Please select an answer.");
}
}