// @nuget: Newtonsoft.Json

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

using Cache.Factory.Extensions;

​

public class Program

{

    public static void Main()

    {

        List<PvData> list = new List<PvData>{new PvData{Id = 1, GirdVoltage = new decimal? []{1, 2, 3}}, new PvData{Id = 2, GirdVoltage = new decimal? []{4, 5, 6}}};

        Console.WriteLine(list.ToJson( Formatting.Indented));

    }

​

    public class PvData

    {

        public int Id { get; set; }

​

        public string GirdVoltageJson { get; set; }

​

        //[NotMapped]

        //[SugarColumn(IsIgnore = true)]

        public decimal? [] GirdVoltage { set => GirdVoltageJson = value.ToJson(); get => GirdVoltageJson.ToEntity<decimal? []>(); }

    }

}

​

namespace Cache.Factory.Extensions

{

    public static class JsonExtends

    {

        public static T ToEntity<T>(this string val)

        {

            return JsonConvert.DeserializeObject<T>(val);

        }

​

        public static string ToJson<T>(this T entity, Formatting formatting = Formatting.None)

        {

            return JsonConvert.SerializeObject(entity, formatting);

        }

​

        /// <summary>

        /// 保留key原来格式(不改变首字母大小写)

        /// </summary>

        /// <typeparam name = "T"></typeparam>

        /// <param name = "entity"></param>

        /// <param name = "formatting"></param>

        /// <returns></returns>

        public static string ToJsonDefault<T>(this T entity, Formatting formatting = Formatting.None)

        {

            JsonSerializerSettings settings = new JsonSerializerSettings();

            //EF Core中默认为驼峰样式序列化处理key

            //settings.ContractResolver = new CamelCasePropertyNamesContractResolver();

            //使用默认方式，不更改元数据的key的大小写

            settings.ContractResolver = new DefaultContractResolver();

            return JsonConvert.SerializeObject(entity, Formatting.None, settings);

        }

    }

}