using System;

using Newtonsoft.Json;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var json = @"{""B"":42.0}";

        var p2 = JsonConvert.DeserializeObject<A>(json, new CustomIntConverter());      

        p2.Dump();

        json =  @"{""B"":42}";

        p2 = JsonConvert.DeserializeObject<A>(json, new CustomIntConverter());      

        p2.Dump();

    }

}

​

public class A{

    public int B {get;set;}

}

​

public class CustomIntConverter : JsonConverter<int>

{

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

    {

        writer.WriteValue(value.ToString());

    }

​

    public override int ReadJson(JsonReader reader, Type objectType, int existingValue, bool hasExistingValue, JsonSerializer serializer)

    {

        int i = Convert.ToInt32(reader.Value);

        return i;

    }

}