private void btnNO_Click(object sender, RoutedEventArgs e)
 {
     Close();
     TestEndWindow test = new TestEndWindow();
     test.Close();
 }
 private void MetroWindow_Loaded(object sender, RoutedEventArgs e)
 {
     using (var db = new LanguageTutorialContext())
     {
         if (LanguageID == 1)
         {
                     var session = new Session();
                     session.CourseId = App.oCourseEnglish.Id;
                     session.Words = CountRightWords;
                     session.Points = Result;
                     session.Datetime = DateTime.Now;
                     session.FinishedWords = isLearned;
                     db.Session.Add(session);
         }
         if (LanguageID == 2)
                 {
                     var session = new Session();
                     session.CourseId = App.oCourseFrançais.Id;
                     session.Words = CountRightWords;
                     session.Points = Result;
                     session.Datetime = DateTime.Now;
                     session.FinishedWords = isLearned;
                     db.Session.Add(session);
                 }
         db.SaveChanges();
        //Проверка на то, что пользователь прошел веь курс
         var result = db.WordQueue.Where(wq => wq.UserId == App.oActiveUser.Id && wq.WordDictionary.LanguageId == LanguageID && wq.IsLearned == false).ToList();
         if (result.Count == 0)
         {
             //Ты прошел весь курс
             TestEndWindow testEnd = new TestEndWindow(LanguageID);
             testEnd.ShowDialog();
         }
             }
 }