/// <summary> /// query signal record by lanbuda expression ByReadOnlyDB /// </summary> /// <param name="predicate"></param> /// <returns></returns> public MailTemplateDto GetByReadOnlyDB(Expression <Func <MailTemplate, bool> > predicate) { try { return(Mapper.Map <MailTemplateDto>(_repository.FirstOrDefaultByReadOnlyDB(predicate))); } catch (Exception ex) { _log.LogError("MailTemplateAppService GetByReadOnlyDB lanbuda error occured:" + ex.Message); return(null); } }