字典/列表对象的C#多态JSON反序列化

// 定义基类
public abstract class Shape
{
    public abstract string Type { get; }
}

// 定义子类
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; }
}

// JSON数据
string json = "{\"Type\":\"Circle\",\"Radius\":5}";

// 反序列化为基类对象
Shape shape = JsonConvert.DeserializeObject<Shape>(json);

// 根据类型进行处理
if (shape is Circle circle)
{
    Console.WriteLine($"Type: {circle.Type}, Radius: {circle.Radius}");
}
else if (shape is Rectangle rectangle)
{
    Console.WriteLine($"Type: {rectangle.Type}, Width: {rectangle.Width}, Height: {rectangle.Height}");
}