C#/.NET中借助 Newtonsoft.Json 返回给前端json强制使用小写格式

using Newtonsoft.Json;    

　　public class YourOutDto
    {
        /// 

        /// 区域
        /// 
        /// 
        public string Area { get; set; }

        /// 

        ////// 
        /// 
        [JsonProperty(PropertyName = "avgDust")]
        public float? AvgDust { get; set; }

    }

/// 

        /// 自定义对象序列化为json，强制使用小写格式
        /// 
        /// 
        /// 
        /// 
        public static string ToJsonCustomer(this object obj, string datetimeformats = "yyyy-MM-dd HH:mm:ss")
        {
            string json =
                  JsonConvert.SerializeObject(
                    obj,
                    Formatting.Indented,
                    new JsonSerializerSettings
                    {
                        ContractResolver = new CamelCasePropertyNamesContractResolver(),
                        Converters = { new IsoDateTimeConverter { DateTimeFormat = datetimeformats } }
                    }
                );
            return json;
        }