private void CheckButton_Click(object sender, RoutedEventArgs e)
        {
            List <AnswerDTO> answers = new List <AnswerDTO>();

            foreach (DisplayWord word in StackOfWords.Children)
            {
                AnswerViewModel answer = new AnswerViewModel()
                {
                    Id       = word.Question.Id,
                    Language = word.Question.TranslateIntoLanguage,
                    TopicId  = word.Question.TopicId,
                    Answer   = word.TranslationBox.Text
                };
                answers.Add(Mapper.MapAnswerDTO(answer));
            }

            IEnumerable <AnswerDTO> correctAnswerDTOs = _topicService.Check(answers);
            List <AnswerViewModel>  correctAnswers    = new List <AnswerViewModel>();

            foreach (AnswerDTO answer in correctAnswerDTOs)
            {
                correctAnswers.Add(Mapper.MapAnswer(answer));
            }

            foreach (DisplayWord word in StackOfWords.Children)
            {
                AnswerViewModel answer = correctAnswers.Where(a => a.Id == word.Question.Id).FirstOrDefault();
                if (answer != null)
                {
                    word.DisplayImage(answer.IsCorrect);
                }
                else
                {
                    word.DisplayImage(false);
                }
                word.DisableTranslation();
            }
            ResultProgress.SetProgress(correctAnswers.Where(a => a.IsCorrect).Count() * 100 / correctAnswers.Count());
            ResultProgress.Visibility = Visibility.Visible;
        }