MonoTouch:如何序列化未标记为Serializable的类型(如CLLocation)？

Install-Package ServiceStack.Text

using ServiceStack.Text;
using CoreLocation;

namespace MonoTouchExample
{
    public class CLLocationSerializable
    {
        public double Latitude { get; set; }
        public double Longitude { get; set; }

        public CLLocationSerializable(CLLocation location)
        {
            Latitude = location.Coordinate.Latitude;
            Longitude = location.Coordinate.Longitude;
        }

        public CLLocation ToCLLocation()
        {
            var coordinate = new CLLocationCoordinate2D(Latitude, Longitude);
            return new CLLocation(coordinate);
        }
    }

    public class Program
    {
        public static void Main(string[] args)
        {
            var location = new CLLocation(37.7749, -122.4194);
            var serializableLocation = new CLLocationSerializable(location);

            // 序列化
            string json = JsonSerializer.SerializeToString(serializableLocation);
            Console.WriteLine($"Serialized: {json}");

            // 反序列化
            var deserializedLocation = JsonSerializer.DeserializeFromString<CLLocationSerializable>(json);
            Console.WriteLine($"Deserialized: Latitude={deserializedLocation.Latitude}, Longitude={deserializedLocation.Longitude}");
        }
    }
}