C# dynamic 动态创建 json

1. 如何通过C# 的dynamic 创建如下json 对象?

{
	"query": {
		"match": [{
			"name": "jk",
			"age": "25"
		},
		{
			"realName": "zs",
			"realAge": "9"
		}]
	},
	"page": 5
}

2. 通过 dynamic + Dictionary<TKey,TValue> 即可实现 , 如下:

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Dynamic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AnuoDog.Csharp
{
    class StudyJsonNET
    {
        static void Main(string[] args)
        {
            dynamic objmatch = new ExpandoObject();

            Dictionary<string, string> matchKV = new Dictionary<string, string>();
            matchKV.Add("name", "jk");
            matchKV.Add("age","25");

            Dictionary<string, string> matchKV2 = new Dictionary<string, string>();
            matchKV2.Add("realName", "zs");
            matchKV2.Add("realAge", "9");

            List<dynamic> matchList = new List<dynamic>();
            matchList.Add(matchKV);
            matchList.Add(matchKV2);


            objmatch.match = matchList;

            dynamic obj = new ExpandoObject();
            obj.query = objmatch;
            obj.page = 5;

            string json = JsonConvert.SerializeObject(obj);
        }
    }
}

3.不知道还有木有其他更简单的创建方法?