/// <summary>
        /// 获取用户问题
        /// </summary>
        /// <param name="accId"></param>
        /// <returns></returns>
        public string GetUserQuestion(int accId)
        {
            var model = Sys_Visit_QuestionBLL.GetUserQuestion(accId);

            if (model == null)
            {
                return("");
            }
            else
            {
                return(CommonLib.Helper.JsonSerializeObject(model));
            }
        }
 /// <summary>
 /// 新增客服问题的回复
 /// </summary>
 /// <param name="accId"></param>
 /// <param name="qid"></param>
 /// <param name="reply"></param>
 /// <returns></returns>
 public string AddReply(int accId, int qid, string reply)
 {
     return(Sys_Visit_QuestionBLL.AddQuestionReply(accId, qid, reply).ToString());
 }