using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""prop1"": 12.45

            }";

​

​

        Object obj = JsonConvert.DeserializeObject<Object>(json);

        Console.WriteLine("prop1 = " + (obj.prop1));

        Console.WriteLine("prop2 = " + (obj.prop2));

    }

}

​

class Object 

{

     public double prop1 {get; set; }

​

     public double prop2 {get; set; }

}

​