public ActionResult Question()
        {
            var date   = DateTime.Now.ToShortDateString();
            var userId = Convert.ToInt32(GeneralHelpers.GetUserId());
            var quiz   = _knowledgeTestService.GetAll().Where(x => (Convert.ToDateTime(x.KnowledgeDate.ToShortDateString()) == Convert.ToDateTime(date))).ToList();
            var answer = _answerQueryableRepository.Table.Where(x => x.UserId == userId).ToList();
            List <KnowledgeTest> quizList = new List <KnowledgeTest>();

            if (answer.Count == 0)
            {
                return(View(quiz));
            }
            foreach (var quizItem in quiz)
            {
                foreach (var answerItem in answer)
                {
                    if (answer.Count != quiz.Count)
                    {
                        if (quizItem.KnowledgeTestId != answerItem.KnowledgeTestId)
                        {
                            quizList.Add(_knowledgeTestService.GetById(answerItem.KnowledgeTestId));
                        }
                    }
                }
            }
            return(View(quizList));
        }