public Respbase <List <VnetCity> > CityList(Reqbase req) { ChatFacade facade = new ChatFacade(); List <VnetCity> dtos = facade.CityList(req); if (dtos == null || dtos.Count == 0) { return(new Respbase <List <VnetCity> > { Result = -1, Message = "获取数据失败", Data = null }); } return(new Respbase <List <VnetCity> > { Data = dtos }); }