private void btnSave_Click(object sender, RoutedEventArgs e)
{
//добавление нового теста
if (txtAddTest.Text == "")
{
return;
}
using (TestingEntities db = new TestingEntities())
{
Test test = db.Tests.FirstOrDefault(t => t.name_test == txtAddTest.Text);
//проверка на уникальность нового названия
if (test == null)
{
db.Tests.Add(new Test {
name_test = txtAddTest.Text
});
db.SaveChanges();
}
else
{
MessageBox.Show("Тест с таким названием уже существует.");
btnClear_Click(null, null);
}
}
}
private void btnNext_Click(object sender, RoutedEventArgs e)
{
//проверяем был ли ответ
if (!beAnswer)
{
return;
}
//проверяем правильность ответа
using (TestingEntities db = new TestingEntities())
{
int i = listQuestion[idQuestion].id;
Answer answer = db.Answers.FirstOrDefault(a => a.questionId == i && a.answer_name == Ans);
if (answer.correctly != 0)
{
correctAnswer++;
}
}
idQuestion++;
//если вопросов больше нет
if (idQuestion == totalAnswer)
{
viewRusult window = new viewRusult(studentId, testId, totalAnswer, correctAnswer);
window.Show();
this.Close();
}
else
{
initList();
}
beAnswer = false;
}
private void ComboBoxItemQueation_Selected(object sender, RoutedEventArgs e)
{
//выбор вопроса
listBox.Items.Clear();
string nameQuestion = ((sender as ComboBoxItem).Content as TextBlock).Text;
using (TestingEntities db = new TestingEntities())
{
//заполнение листа ответами
Question question = db.Questions.FirstOrDefault(q => q.name_question == nameQuestion);
idQuestion = question.id;
var answers = db.Answers.Where(a => a.questionId == idQuestion);
if (answers == null)
{
addListBoxItem("");
addListBoxItem("");
}
else
{
foreach (Answer item in answers)
{
addListBoxItem(item.answer_name);
}
}
}
}
private void initList()
{
listAnswer.Items.Clear();
txtNameQuestion.Text = "";
using (TestingEntities db = new TestingEntities())
{
txtNameQuestion.Text = listQuestion[idQuestion].name_question;
int i = listQuestion[idQuestion].id;
//получаем вопрос
var answers = db.Answers.Where(a => a.questionId == i);
//заполняем список ответов
foreach (Answer item in answers)
{
ListBoxItem listBoxItem = new ListBoxItem();
listBoxItem.Margin = new Thickness(5);
StackPanel stackItem = new StackPanel();
stackItem.Orientation = Orientation.Horizontal;
TextBlock textBlock = new TextBlock();
textBlock.MaxWidth = 750;
textBlock.TextWrapping = TextWrapping.Wrap;
textBlock.Text = item.answer_name;
RadioButton radio = new RadioButton {
IsChecked = false, GroupName = "Answer"
};
radio.Checked += radio_Checked;
stackItem.Children.Add(radio);
stackItem.Children.Add(textBlock);
listBoxItem.Content = stackItem;
listAnswer.Items.Add(listBoxItem);
}
}
}
private void btnSaveQuestion_Click(object sender, RoutedEventArgs e)
{
//добавление нового вопроса
if (txtAddQuestion.Text == "")
{
return;
}
using (TestingEntities db = new TestingEntities())
{
Question question = db.Questions.FirstOrDefault(q => q.name_question == txtAddQuestion.Text);
//проверка на уникальность вопроса
if (question == null)
{
int id = cmbTests.SelectedIndex + 1;
db.Questions.Add(new Question {
name_question = txtAddTest.Text, testId = id
});
db.SaveChanges();
}
else
{
MessageBox.Show("Вопрос уже существует.");
btnClearQuestion_Click(null, null);
}
}
}
//заполнение списка
void initList(bool isTest)
{
listBox.Items.Clear();
using (TestingEntities db = new TestingEntities())
{
//заполнение списка тестов
if (isTest)
{
var tests = db.Tests;
foreach (var item in tests)
{
ListBoxItem listBoxItem = new ListBoxItem();
listBoxItem.Margin = new Thickness(5);
TextBlock textBlock = new TextBlock();
textBlock.Text = item.name_test;
listBoxItem.Content = textBlock;
listBox.Items.Add(listBoxItem);
}
}
else
{
//заполнение списка студентов
var students = db.Users.Where(u => u.Role.role_name == "Студент");
foreach (var item in students)
{
ListBoxItem listBoxItem = new ListBoxItem();
listBoxItem.Margin = new Thickness(5);
TextBlock textBlock = new TextBlock();
textBlock.Text = item.first_name + " " + item.last_name;
listBoxItem.Content = textBlock;
listBox.Items.Add(listBoxItem);
}
}
}
}
private void ComboBoxItemQueation_Selected(object sender, RoutedEventArgs e)
{
txtQuestion.Text = "";
txtQuestion.Text = ((sender as ComboBoxItem).Content as TextBlock).Text;
using (TestingEntities db = new TestingEntities()) {
Question question = db.Questions.FirstOrDefault(q => q.name_question == txtQuestion.Text);
questionId = question.id;
}
}
private void btnDelQuestion_Click(object sender, RoutedEventArgs e)
{
//удаление выбраного вопроса
using (TestingEntities db = new TestingEntities())
{
db.Questions.Remove(db.Questions.First(q => q.id == questionId));
var deleteAnswer = db.Answers.Where(a => a.questionId == questionId);
//удаление ответов удаленного вопроса
db.Answers.RemoveRange(deleteAnswer);
db.SaveChanges();
}
}
void PassingTest_Loaded(object sender, RoutedEventArgs e)
{
using (TestingEntities db = new TestingEntities())
{
//получаем выбранный тест
Test test = db.Tests.First(t => t.id == testId);
txtNameTest.Text = test.name_test;
totalAnswer = db.Questions.Where(q => q.testId == testId).Count();
listQuestion = db.Questions.Where(q => q.testId == testId).ToList();
initList();
}
}
private void btnChangeQuestion_Click(object sender, RoutedEventArgs e)
{
//редактирование вопроса
if (txtQuestion.Text == "")
{
return;
}
using (TestingEntities db = new TestingEntities())
{
db.Questions.First(q => q.id == questionId).name_question = txtTest.Text;
db.SaveChanges();
}
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
//редактирование теста
if (txtTest.Text == "")
{
return;
}
using (TestingEntities db = new TestingEntities())
{
db.Tests.First(t => t.id == testId).name_test = txtTest.Text;
db.SaveChanges();
}
}
private void btnDeleteAnswer_Click(object sender, RoutedEventArgs e)
{
if (deleteAnswer.Count == 0)
{
return;
}
string answer = deleteAnswer.FirstOrDefault(a => a == correctlyAnswer);
//проверка на удаление правильного ответа
if (answer != null)
{
MessageBox.Show("Вы удаляете ответ, помеченный как правильный.");
return;
}
int countListBoxItem = 0;
foreach (var item in listBox.Items)
{
countListBoxItem++;
}
//удаление вопросов из листа
for (int i = 0; i < countListBoxItem; i++)
{
foreach (var item in ((listBox.Items[i] as ListBoxItem).Content as StackPanel).Children)
{
if (item is TextBox)
{
string answerItem = (item as TextBox).Text;
answer = deleteAnswer.FirstOrDefault(a => a == answerItem);
if (answer != null)
{
listBox.Items.Remove(listBox.Items[i]);
}
}
}
}
//удаление вопросов из базы
using (TestingEntities db = new TestingEntities())
{
foreach (string item in deleteAnswer)
{
Answer ans = db.Answers.FirstOrDefault(a => a.answer_name == item);
if (ans != null)
{
db.Answers.Remove(ans);
}
}
db.SaveChanges();
}
}
private void RedactorAnswer_Loaded(object sender, RoutedEventArgs e)
{
using (TestingEntities db = new TestingEntities())
{
var tests = db.Tests;
foreach (Test item in tests)
{
ComboBoxItem comboBoxItem = new ComboBoxItem();
TextBlock textBlock = new TextBlock();
textBlock.Text = item.name_test;
comboBoxItem.Content = textBlock;
comboBoxItem.Selected += ComboBoxItem_Selected;
cmbTest.Items.Add(comboBoxItem);
}
}
}
private void RedaktorTestov_Loaded(object sender, RoutedEventArgs e)
{
using (TestingEntities db = new TestingEntities())
{
var tests = db.Tests;
//заполняем комбобокс тестами
foreach (Test item in tests)
{
ComboBoxItem comboBoxItem = new ComboBoxItem();
TextBlock textBlock = new TextBlock();
textBlock.Text = item.name_test;
comboBoxItem.Content = textBlock;
comboBoxItem.Selected += ComboBoxItem_Selected;
cmbTests.Items.Add(comboBoxItem);
}
}
}
private void ViewRusult_Loaded(object sender, RoutedEventArgs e)
{
User name;
Test testName;
//заполняем результаты теста
using (TestingEntities db = new TestingEntities())
{
name = db.Users.FirstOrDefault(u => u.id == studentId);
testName = db.Tests.FirstOrDefault(t => t.id == testId);
txtResult.Text = "Студент: " + name.first_name + " " + name.last_name + "\nТест: " + testName.name_test + "\nВсего вопросов: " + totalAnswer.ToString();
txtResult.Text += "\nПравильных ответов: " + correntlyAnswer.ToString() + "\nРезультат: " + ((int)((double)correntlyAnswer / totalAnswer * 100)).ToString() + "%";
db.UserRatings.Add(new UserRating {
userId = studentId, testId = this.testId, rating = ((int)((double)correntlyAnswer / totalAnswer * 100)).ToString()
});
db.SaveChanges();
}
}
private void btnSaveAnswers_Click(object sender, RoutedEventArgs e)
{
int countListBoxItem = 0;
foreach (var item in listBox.Items)
{
countListBoxItem++;
}
//сохранение ответов
using (TestingEntities db = new TestingEntities())
{
string answerItem = "";
bool? isCorrectly = false;
var answers = db.Answers.Where(a => a.questionId == idQuestion);
db.Answers.RemoveRange(answers);
for (int i = 0; i < countListBoxItem; i++)
{
foreach (var item in ((listBox.Items[i] as ListBoxItem).Content as StackPanel).Children)
{
if (item is TextBox)
{
answerItem = (item as TextBox).Text;
}
else if (item is StackPanel)
{
foreach (var item1 in (item as StackPanel).Children)
{
if (item1 is RadioButton)
{
isCorrectly = (item1 as RadioButton).IsChecked;
}
}
}
}
Answer newAnswer = new Answer();
newAnswer.answer_name = answerItem;
newAnswer.questionId = idQuestion;
newAnswer.correctly = (isCorrectly == false) ? 0 : 1;
db.Answers.Add(newAnswer);
db.SaveChanges();
}
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
//удаление теста
if (cmbTests.SelectedItem == null)
{
return;
}
using (TestingEntities db = new TestingEntities())
{
db.Tests.Remove(db.Tests.First(t => t.id == testId));
var deleteQestion = db.Questions.Where(q => q.testId == testId);
//удаление вопросов и ответов удаленного теста
foreach (Question item in deleteQestion)
{
var deleteAnswer = db.Answers.Where(a => a.questionId == item.id);
db.Answers.RemoveRange(deleteAnswer);
}
db.Questions.RemoveRange(deleteQestion);
db.SaveChanges();
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
using (TestingEntities db = new TestingEntities())
{
User user = db.Users.FirstOrDefault(u => u.user_login == txtLogin.Text);
//Проверяем правильность ввода данных
if (user == null || txtPaasword.Password != user.user_password)
{
lblErr.Visibility = Visibility.Visible;
lblErr.Visibility = Visibility.Visible;
txtLogin.Clear();
txtPaasword.Clear();
txtLogin.Focus();
return;
}
bool role;
//Выбор интерфейса преподаватель/студент
role = (user.Role.role_name == "Преподаватель") ? true : false;
MainWindowProgram window = new MainWindowProgram(role, user.id);
window.Show();
this.Close();
}
}
private void ComboBoxItem_Selected(object sender, RoutedEventArgs e)
{
//заполняем ответы по выбраному тесту
txtTest.Text = "";
txtTest.Text = ((sender as ComboBoxItem).Content as TextBlock).Text;
cmbQuestion.Items.Clear();
txtAddQuestion.Clear();
txtQuestion.Clear();
using (TestingEntities db = new TestingEntities())
{
Test test = db.Tests.FirstOrDefault(t => t.name_test == txtTest.Text);
testId = test.id;
var questions = db.Questions.Where(q => q.testId == testId);
foreach (Question item in questions)
{
ComboBoxItem comboBoxItemQueation = new ComboBoxItem();
TextBlock textBlock = new TextBlock();
textBlock.Text = item.name_question;
comboBoxItemQueation.Content = textBlock;
comboBoxItemQueation.Selected += ComboBoxItemQueation_Selected;
cmbQuestion.Items.Add(comboBoxItemQueation);
}
}
}
private void ComboBoxItem_Selected(object sender, RoutedEventArgs e)
{
//выбор теста
cmbQuestion.Items.Clear();
listBox.Items.Clear();
string nameTest = ((sender as ComboBoxItem).Content as TextBlock).Text;
using (TestingEntities db = new TestingEntities())
{
Test test = db.Tests.FirstOrDefault(t => t.name_test == nameTest);
idTest = test.id;
var questions = db.Questions.Where(q => q.testId == idTest);
//заполнение комбобокса вапросами
foreach (Question item in questions)
{
ComboBoxItem comboBoxItemQueation = new ComboBoxItem();
TextBlock textBlock = new TextBlock();
textBlock.Text = item.name_question;
comboBoxItemQueation.Content = textBlock;
comboBoxItemQueation.Selected += ComboBoxItemQueation_Selected;;
cmbQuestion.Items.Add(comboBoxItemQueation);
}
}
}
private void btnResults_Click(object sender, RoutedEventArgs e)
{
if (listBox.SelectedItem == null)
{
return;
}
//если интерфейс преподавателя
if (isTeacher)
{
using (TestingEntities db = new TestingEntities())
{
//исли активен список студентов
if (isStudent)
{
//получаем имя и фамилию студента, выбранного в списке
string studentName = ((listBox.SelectedItem as ListBoxItem).Content as TextBlock).Text;
var tests = db.Tests;
//выбираем результаты по выбранному студенту
var results = db.UserRatings.Where(r => (r.User.first_name + " " + r.User.last_name) == studentName).ToList();
listBox.Items.Clear();
//заполняем листбокс
foreach (var item in tests)
{
UserRating rating = results.FirstOrDefault(r => r.testId == item.id);
ListBoxItem listBoxItem = new ListBoxItem();
listBoxItem.Margin = new Thickness(5);
TextBlock textBlock = new TextBlock();
//если студент не здавал еще тест
if (rating == null)
{
textBlock.Text = item.name_test + "\t не здавал";
}
//оценка
else
{
textBlock.Text = item.name_test + " \t" + rating.rating + "%";
}
listBoxItem.Content = textBlock;
listBox.Items.Add(listBoxItem);
}
}
else
{
//если активен список тестов
int testId = listBox.SelectedIndex + 1;
listBox.Items.Clear();
foreach (var item in db.Users.Where(u => u.Role.role_name == "Студент"))
{
//выбераем результаты по каждому тесту
UserRating result = db.UserRatings.FirstOrDefault(r => (r.testId == testId) && (r.userId == item.id));
ListBoxItem listBoxItem = new ListBoxItem();
listBoxItem.Margin = new Thickness(5);
TextBlock textBlock = new TextBlock();
//если результатов нет
if (result == null)
{
textBlock.Text = item.first_name + " " + item.last_name + "\t не здавал";
}
else
{
textBlock.Text = item.first_name + " " + item.last_name + "\t" + result.rating + "%";
}
listBoxItem.Content = textBlock;
listBox.Items.Add(listBoxItem);
}
}
}
}
else
{
//интерфейс студента
using (TestingEntities db = new TestingEntities())
{
//выбираем все тесты по данному студенту
int testId = listBox.SelectedIndex + 1;
Test tests = db.Tests.FirstOrDefault(t => t.id == testId);
listBox.Items.Clear();
UserRating results = db.UserRatings.FirstOrDefault(r => (r.userId == id) && (r.testId == tests.id));
ListBoxItem listBoxItem = new ListBoxItem();
listBoxItem.Margin = new Thickness(5);
TextBlock textBlock = new TextBlock();
//если результатов нет
if (results == null)
{
textBlock.Text = tests.name_test + " \tне здавал";
}
//оценка
else
{
textBlock.Text = tests.name_test + "\t " + results.rating + "%";
}
listBoxItem.Content = textBlock;
listBox.Items.Add(listBoxItem);
}
}
}
