public List <TopicDTO> SelectTopic() { List <TopicDTO> topicDTOList = new List <TopicDTO>(); List <Topic> topicList = topicDAL.SelectTopic(); foreach (Topic item in topicList) { TopicDTO topicDTO = new TopicDTO(); topicDTO.TopicID = item.TopicID; topicDTO.TopicName = item.TopicName; topicDTO.TopicCategory = item.TopicCategory; topicDTO.TopicSyllabus = item.TopicSyllabus; topicDTOList.Add(topicDTO); } return(topicDTOList); }