使用linq在对象的属性中以字符串形式查询Json

using Newtonsoft.Json.Linq;
using System;
using System.Linq;

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public class Program
{
    public static void Main()
    {
        string json = @"{
            'persons': [
                { 'name': 'Alice', 'age': 25 },
                { 'name': 'Bob', 'age': 30 },
                { 'name': 'Charlie', 'age': 35 }
            ]
        }";

        JObject obj = JObject.Parse(json);

        var query = from person in obj["persons"]
                    where person["name"].ToString() == "Bob"
                    select new Person
                    {
                        Name = person["name"].ToString(),
                        Age = int.Parse(person["age"].ToString())
                    };

        Person result = query.FirstOrDefault();

        if (result != null)
        {
            Console.WriteLine($"Name: {result.Name}, Age: {result.Age}");
        }
        else
        {
            Console.WriteLine("Person not found.");
        }
    }
}