public string GetTouristInfomations(GetTouristInfomationRequest request)
        {
            //獲取全部的話,tourId,sender 然後distinct receiver之後然後再
            var pager = send_InformationService.GetTouristInfomations_Page(request);

            var newPager = MapperHelper.Map<App_Page_Infomation_Guide<GetInfomationResponse>>(pager);
            newPager.lastMsgId = request.lastMsgId;
            return JsonHelper.Success(newPager);
        }
        public string GetTouristInfomations(GetTouristInfomationRequest request)
        {
            //sender 應該是導遊,因為遊客自己發送的消息是不需要從服務器下載的,他自己發了就存在本地,需要下載的只是導遊發送的消息

            //獲取全部的話,tourId,sender 然後distinct receiver之後然後再
            var pager = send_InformationService.GetTouristInfomations_Page(request);

            var newPager = MapperHelper.Map<App_Page_Infomation_Guide<GetInfomationResponse>>(pager);
            newPager.lastMsgId = request.lastMsgId;
            newPager.isReadInfos = send_InformationService.GetReadInfos(request.tourId);
            return JsonHelper.Success(newPager);
        }