/// <summary>
        /// 加入Line的對話用戶到交談資料表中
        /// </summary>
        /// <param name="strReplyToken"></param>
        /// <param name="strUserId"></param>
        public void AddLine(string strReplyToken, string strUserId)
        {
            ConversationFile objCon = this.Query(strReplyToken).FirstOrDefault();

            if (objCon == null)
            {
                objCon = new ConversationFile()
                {
                    ConversationId = strUserId,
                    CreateDate     = DateTime.Now,
                    FromId         = strUserId,
                    FromName       = strUserId,
                    ServiceUrl     = "https://api.line.me/v2/bot/message/reply",
                    ChannelId      = "Line",
                    RecipientId    = "",
                    RecipientName  = "",
                };

                db.ConversationFile.Add(objCon);
                db.SaveChanges();
            }
        }
        /// <summary>
        /// 增加新的對話資料
        /// </summary>
        /// <param name="strConversationId"></param>
        /// <param name="strFromName"></param>
        /// <param name="strFromId"></param>
        /// <param name="strServiceUrl"></param>
        /// <returns></returns>
        public void Add(Activity message)
        {
            ConversationFile objCon = this.Query(message.Conversation.Id).FirstOrDefault();

            if (objCon == null)
            {
                objCon = new ConversationFile()
                {
                    ConversationId = message.Conversation.Id,
                    CreateDate     = DateTime.Now,
                    FromId         = message.From.Id,
                    FromName       = message.From.Name,
                    ServiceUrl     = message.ServiceUrl,
                    ChannelId      = message.ChannelId,
                    RecipientId    = message.Recipient.Id,
                    RecipientName  = message.Recipient.Name,
                };

                db.ConversationFile.Add(objCon);
                db.SaveChanges();
            }
        }