JsonConvert反序列化抽象类的数组

using Newtonsoft.Json;
using System;

public abstract class Shape
{
    public abstract string Type { get; }
}

public class Circle : Shape
{
    public override string Type => "Circle";
    public double Radius { get; set; }
}

public class Rectangle : Shape
{
    public override string Type => "Rectangle";
    public double Width { get; set; }
    public double Height { get; set; }
}

public class Program
{
    public static void Main()
    {
        string json = "[{\"Type\":\"Circle\",\"Radius\":5.0},{\"Type\":\"Rectangle\",\"Width\":10.0,\"Height\":20.0}]";

        Shape[] shapes = JsonConvert.DeserializeObject<Shape[]>(json);

        foreach (Shape shape in shapes)
        {
            Console.WriteLine($"Type: {shape.Type}");

            if (shape is Circle circle)
            {
                Console.WriteLine($"Radius: {circle.Radius}");
            }
            else if (shape is Rectangle rectangle)
            {
                Console.WriteLine($"Width: {rectangle.Width}");
                Console.WriteLine($"Height: {rectangle.Height}");
            }

            Console.WriteLine();
        }
    }
}