/// <summary>
        /// 删除城市价格趋势
        /// </summary>
        /// <param name="entity">城市价格趋势</param>
        public HttpResponseMessage Delete([FromBody]CityPriceTrend entity)
        {
            if (entity == null)
            {
                return new HttpResponseMessage(HttpStatusCode.BadRequest);
            }
            else
            {
                CityPriceTrendFunction cityPriceTrendFunction = new CityPriceTrendFunction();
                int error = cityPriceTrendFunction.DeleteCityPriceTrend(entity);
                var response = GetResponse.PriceTrendResponse(error);

                return response;
            }
        }
        /// <summary>
        /// 删除城市价格趋势
        /// </summary>
        /// <param name="city">城市</param>
        public HttpResponseMessage Delete(string city)
        {
            if (string.IsNullOrEmpty(city))
            {
                return new HttpResponseMessage(HttpStatusCode.BadRequest);
            }
            else
            {
                var entity = new CityPriceTrend() { City = city };
                CityPriceTrendFunction cityPriceTrendFunction = new CityPriceTrendFunction();
                int error = cityPriceTrendFunction.DeleteCityPriceTrend(entity);
                var response = GetResponse.PriceTrendResponse(error);

                return response;
            }
        }