using System;

using System.Collections.Generic;

using Newtonsoft.Json;

​

[Serializable]

class BaseClass

{

    public string CommonProperty { get; set; }

}

​

[Serializable]

class DerivedClass1 : BaseClass

{

    public int SpecificProperty1 { get; set; }

}

​

[Serializable]

class DerivedClass2 : BaseClass

{

    public double SpecificProperty2 { get; set; }

}

​

class Program

{

    static void Main()

    {

        List<BaseClass> objectList = new List<BaseClass>

        {

            new DerivedClass1 { CommonProperty = "Object1", SpecificProperty1 = 42 },

            new DerivedClass2 { CommonProperty = "Object2", SpecificProperty2 = 3.14 }

        };

​

        // Serialize the list with type information

        string json = SerializeToJsonWithTypeInfo(objectList);

​

        Console.WriteLine($"JSON: {json}");

        // Deserialize the JSON data with type information

        List<BaseClass> deserializedList = DeserializeFromJsonWithTypeInfo<List<BaseClass>>(json);

​

        // Display the deserialized objects

        foreach (var obj in deserializedList)

        {

            Console.WriteLine($"Object Type: {obj.GetType().Name}");

            Console.WriteLine($"CommonProperty: {obj.CommonProperty}");

            if (obj is DerivedClass1 derived1)

            {

                Console.WriteLine($"SpecificProperty1: {derived1.SpecificProperty1}");

            }

            else if (obj is DerivedClass2 derived2)

            {

                Console.WriteLine($"SpecificProperty2: {derived2.SpecificProperty2}");

            }

            Console.WriteLine();

        }

    }

​

    static string SerializeToJsonWithTypeInfo<T>(T data)

    {

        JsonSerializerSettings settings = new JsonSerializerSettings

        {

            TypeNameHandling = TypeNameHandling.All

        };

        return JsonConvert.SerializeObject(data, Formatting.Indented, settings);

    }

​

    static T DeserializeFromJsonWithTypeInfo<T>(string json)

    {

        JsonSerializerSettings settings = new JsonSerializerSettings

        {

            TypeNameHandling = TypeNameHandling.All

        };

        return JsonConvert.DeserializeObject<T>(json, settings);

    }

}

​