using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"[{ ""a"": 1, ""b"": 2 },{ ""a"": 3, ""b"": 4 }]";

        var models = JsonConvert.DeserializeObject<Model[]>(json);

        foreach (var model in models)

        {

            Console.WriteLine("A: " + model.A);

            Console.WriteLine("B: " + model.B);

            Console.WriteLine("FullJson: " + model.FullJson);

            Console.WriteLine();

        }

    }

}

​

[JsonConverter(typeof(ModelConverter))]

class Model

{

   public string A {get;set;} // = 1

   public string B {get;set;} // = 2

   public string FullJson {get;set;} // = {a:1,b:2}

}

​

class ModelConverter : JsonConverter

{

    public override bool CanConvert(Type objectType)

    {

        return objectType == typeof(Model);

    }

​

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)

    {

        JObject jo = JObject.Load(reader);

        Model model = new Model();

        serializer.Populate(jo.CreateReader(), model);

        model.FullJson = jo.ToString(Formatting.None);

        return model;

    }

​

    public override bool CanWrite => false;

​

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)

    {

        throw new NotImplementedException();

    }

}

​