Geometry always null(Getting address info using Google Maps API)

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C#

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JSON.NET

I have tried hard but failed to detect the error due to which my method "getmyCoordinates(string address)" always returns data with geometry null

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
using System.Text;
using System.Threading.Tasks;

namespace Hello_Pro.App_Code
{
    class myCoordinatesProxy
    {
        public static async Task getmyCoordinates(string address)
        {


            var http = new HttpClient();
            var response = await http.GetAsync(String.Format("http://maps.google.com/maps/api/geocode/json?address={0}&sensor=false", Uri.EscapeDataString(address)));
            var result = await response.Content.ReadAsStringAsync();
            var serializer = new DataContractJsonSerializer(typeof(RootObject_AutoLocationCoordinates));

            var ms = new MemoryStream(Encoding.UTF8.GetBytes(result));

            var data = (RootObject_AutoLocationCoordinates)serializer.ReadObject(ms);

            return data;
        }
    }


    [DataContract]
    public class AddressComponent_AutoLocationCoordinates
    {
        [DataMember]
        public string long_name { get; set; }
        [DataMember]
        public List types { get; set; }
    }
    [DataContract]
    public class Location_AutoLocationCoordinates
    {
        [DataMember]
        public double lat { get; set; }
        [DataMember]
        public double lng { get; set; }
    }
    [DataContract]
    public class Geometry_AutoLocationCoordinates
    {
        [DataMember]
        public Location_AutoLocationCoordinates location { get; set; }
        [DataMember]
        public string location_type { get; set; }
    }
    [DataContract]
    public class Result_AutoLocationCoordinates
    {
        [DataMember]
        public List address_components { get; set; }
        [DataMember]
        public List types { get; set; }
    }
    [DataContract]
    public class RootObject_AutoLocationCoordinates
    {
        [DataMember]
        public List results { get; set; }
        [DataMember]
        public Geometry_AutoLocationCoordinates geometry { get; set; }
        [DataMember]
        public string status { get; set; }
    }
}