using System;

using System.Text.Json;

public class Program

{

    public static void Main()

    {

        string jsonString = @"{""Name"":""철수"",""age"":11,""gender"":""girl""}";

        Console.WriteLine(jsonString);

        Console.WriteLine("\n");

        Me me = JsonSerializer.Deserialize<Me>(jsonString);

        Console.WriteLine(me.Name);

    }

}

​

public class Me

{

    public string Name { get; set; }

}