//for Topic drp
        public void GetTopicForDrp()
        {
            QuestionBL topicBL = new QuestionBL();
            List <QuestionEntities> pocoList = new List <QuestionEntities>();

            pocoList = topicBL.GetTopicForDrp();

            List <QuestionEntities> itmasterList = new List <QuestionEntities>();

            foreach (QuestionEntities up in pocoList)
            {
                QuestionEntities unt = new QuestionEntities();
                unt.Id        = up.Id;
                unt.TopicName = up.TopicName;

                itmasterList.Add(unt);
            }

            ViewBag.TopicForDrp = itmasterList.Select(x =>
                                                      new SelectListItem()
            {
                Text  = x.TopicName,
                Value = x.Id.ToString()
            });
        }