如何使用c#将JSON反序列化为派生类

using Newtonsoft.Json;

public class BaseClass
{
    public string Name { get; set; }
}

public class DerivedClass : BaseClass
{
    public int Age { get; set; }
}

public class Program
{
    public static void Main()
    {
        string json = "{\"Name\":\"John\",\"Age\":30}";

        DerivedClass derivedObj = JsonConvert.DeserializeObject<DerivedClass>(json);

        Console.WriteLine("Name: " + derivedObj.Name);
        Console.WriteLine("Age: " + derivedObj.Age);
    }
}