using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""hr"": ""12:56"",

              ""vs"": [

                {

                  ""pre"": ""73833"",

                  ""a"": true,

                  ""posx"": ""-46.688962875"",

                  ""posy"": ""-23.632046625""

                },

                {

                  ""pre"": ""73722"",

                  ""a"": true,

                  ""posx"": ""-46.773388125"",

                  ""posy"": ""-23.68939025""

                }

              ]

            }";

        var tracking = JsonConvert.DeserializeObject<Tracking>(json);

        Console.WriteLine("Hour: " + tracking.Hour);

        Console.WriteLine("Vehicles:");

        foreach (Vehicle veh in tracking.Vehicles)

        {

            Console.WriteLine("  Prefix: " + veh.Prefix);

            Console.WriteLine("  Position: (" + veh.Position.X + ", " + veh.Position.Y + ")");

            Console.WriteLine();

        }

        Console.WriteLine(new string('-', 50));

        string json1 = JsonConvert.SerializeObject(tracking, Formatting.Indented);

        Console.WriteLine(json1);

​

    }

}

​

​

public class Tracking

{

    [JsonProperty(PropertyName = "hr")]

    public string Hour { get; set; }

    [JsonProperty(PropertyName = "vs")]

    public IList<Vehicle> Vehicles { get; set; }

}

​

public class Vehicle

{

    [JsonProperty(PropertyName = "pre")]

    public string Prefix { get; set; }

    [JsonIgnore]

    public Position Position { get; set; }

    [JsonProperty(PropertyName = "posx")]

    private string Y

    {

        get { return Position != null ? Position.Y : null; }

        set

        {

            if (Position == null) { Position = new Position(); }

            Position.Y = value;

        }

    }

    [JsonProperty(PropertyName = "posy")]

    private string X

    {

        get { return Position != null ? Position.X : null; }

        set

        {

            if (Position == null) { Position = new Position(); }

            Position.X = value;

        }

    }

}

​

public class Position

{

    public string Y { get; set; }

    public string X { get; set; }

}

​