public string EditQuestion(DTO.Question DtoQuestion)
        {
            DAO.Question _DaoQuestion = m_QuestionManagement.GetQuestion(DtoQuestion.Id);
            _DaoQuestion.Text = DtoQuestion.Text;

            m_QuestionManagement.SaveQuestion(_DaoQuestion);
            return(string.Empty);
        }
        public string CreateQuestion(DTO.Question DtoQuestion)
        {
            DAO.Question _DaoQuestion = new DAO.Question()
            {
                Text = DtoQuestion.Text
            };

            m_QuestionManagement.CreateQuestion(_DaoQuestion);
            return(string.Empty);
        }
        public string GetAllQuestions(string FilterName)
        {
            // Получить список вопросов.
            var _DaoQuestions = m_QuestionManagement.GetAllQuestions(string.Empty);

            // Получить список ответов на вопросы.
            List <DTO.Question> _DtoQuestions = new List <DTO.Question>();

            foreach (var _DaoQuestion in _DaoQuestions)
            {
                // Вопрос.
                var _DtoQuestion = new DTO.Question()
                {
                    Id = _DaoQuestion.Id, Text = _DaoQuestion.Text
                };
                // Ответы.
                foreach (var _DaoAnswers in _DaoQuestion.Answers)
                {
                    DTO.QuestionAnswers _DtoAnswer = new DTO.QuestionAnswers()
                    {
                        QuestionId = _DaoAnswers.QuestionId,
                        AnswerId   = _DaoAnswers.Answer.Id,
                        AnswerText = _DaoAnswers.Answer.Text,
                        IsCorrect  = _DaoAnswers.IsCorrect
                    };

                    _DtoQuestion.Answers.Add(_DtoAnswer);
                }

                _DtoQuestions.Add(_DtoQuestion);
            }

            string _Json = Utils.JsonSerialize(_DtoQuestions);

            return(_Json);
        }