C# dynamic 动态创建 json

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

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);
        }
    }
}