using System;

using System.Linq;

using System.Reflection;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        var sampleClass = new SampleClass()

        {

            Id = 1

        };

​

        var str = "{sample:{id:2}}";

​

        sampleClass = JsonConvert.DeserializeObject<SampleClass>(str, new JsonSerializerSettings());

        Console.WriteLine("Id: " + sampleClass.Id);

    }

}

​

[JsonConverter(typeof(JsonPathConverter))]

public class SampleClass

{

    int id;

    [JsonProperty("sample.id")]

    public int Id

    {

        get

        {

            return id;

        }

        set

        {

            id = value;

        }

    }

}

​

class JsonPathConverter : JsonConverter

{

    public override object ReadJson(JsonReader reader, Type objectType,

                                    object existingValue, JsonSerializer serializer)

    {

        JObject jo = JObject.Load(reader);

        object targetObj = Activator.CreateInstance(objectType);

        foreach (PropertyInfo prop in objectType.GetProperties()

                 .Where(p => p.CanRead && p.CanWrite))

        {

            JsonPropertyAttribute att = prop.GetCustomAttributes(true)

                .OfType<JsonPropertyAttribute>()

                .FirstOrDefault();

            string jsonPath = (att != null ? att.PropertyName : prop.Name);

            JToken token = jo.SelectToken(jsonPath);

            if (token != null && token.Type != JTokenType.Null)

            {

                object value = token.ToObject(prop.PropertyType, serializer);

                prop.SetValue(targetObj, value, null);

            }

        }

        return targetObj;

    }

    public override bool CanConvert(Type objectType)

    {

        // CanConvert is not called when [JsonConverter] attribute is used

        return false;

    }

    public override bool CanWrite

    {

        get { return false; }

    }

    public override void WriteJson(JsonWriter writer, object value,

                                   JsonSerializer serializer)

    {

        throw new NotImplementedException();

    }

}

​