c#如何从Json字符串获取到类实例，然后调用方法

{
  "name": "John",
  "age": 30
}

public class Person
{
    [JsonProperty("name")]
    public string Name { get; set; }

    [JsonProperty("age")]
    public int Age { get; set; }

    public void SayHello()
    {
        Console.WriteLine($"Hello, my name is {Name} and I'm {Age} years old.");
    }
}

string json = "{\"name\":\"John\",\"age\":30}";

Person person = JsonConvert.DeserializeObject<Person>(json);
person.SayHello();

Hello, my name is John and I'm 30 years old.