Search code examples
c#jsongoogle-maps

parse google maps geocode json response to object using Json.Net


I have a DB full of addresses I need to get lat and long for, so I want to loop through them and use Google Geocode to update my database. I am stuck as to how to parse the JSOn result to get what I need:

var address = "http://maps.google.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&sensor=false";
var result = new System.Net.WebClient().DownloadString(address);
GoogleGeoCodeResponse test = JsonConvert.DeserializeObject<GoogleGeoCodeResponse>(result);

I thought I could simply build a quick class and use JSON.Net to deserialize the result, and it is kind of working but I think I am blowing it on my class structure:

public  class GoogleGeoCodeResponse {

    public string status { get; set; }
    public geometry geometry { get; set; }

}

public class geometry {
    public string location_type { get; set; }
    public location location { get; set; }
}

public class location {
    public string lat {get;set;}
    public string lng {get;set;}
}

Here is a sample of what get's returned from Google:

{
  "status": "OK",
  "results": [ {
    "types": [ "street_address" ],
    "formatted_address": "1600 Amphitheatre Pkwy, Mountain View, CA 94043, USA",
    "address_components": [ {
      "long_name": "1600",
      "short_name": "1600",
      "types": [ "street_number" ]
    }, {
      "long_name": "Amphitheatre Pkwy",
      "short_name": "Amphitheatre Pkwy",
      "types": [ "route" ]
    }, {
      "long_name": "Mountain View",
      "short_name": "Mountain View",
      "types": [ "locality", "political" ]
    }, {
      "long_name": "California",
      "short_name": "CA",
      "types": [ "administrative_area_level_1", "political" ]
    }, {
      "long_name": "United States",
      "short_name": "US",
      "types": [ "country", "political" ]
    }, {
      "long_name": "94043",
      "short_name": "94043",
      "types": [ "postal_code" ]
    } ],
    "geometry": {
      "location": {
        "lat": 37.4219720,
        "lng": -122.0841430
      },
      "location_type": "ROOFTOP",
      "viewport": {
        "southwest": {
          "lat": 37.4188244,
          "lng": -122.0872906
        },
        "northeast": {
          "lat": 37.4251196,
          "lng": -122.0809954
        }
      }
    }
  } ]
}

I am missing simple here I know it, anyone?


Solution

  • I tried this, made a simple test and it worked (added results and other):

    public class GoogleGeoCodeResponse
    {
    
        public string status { get; set; }
        public results[] results { get; set; }
    
    }
    
    public class results
    {
        public string formatted_address { get; set; }
        public geometry geometry { get; set; }
        public string[] types { get; set; }
        public address_component[] address_components { get; set; }
    }
    
    public class geometry
    {
        public string location_type { get; set; }
        public location location { get; set; }
    }
    
    public class location
    {
        public string lat { get; set; }
        public string lng { get; set; }
    }
    
    public class address_component
    {
        public string long_name { get; set; }
        public string short_name { get; set; }
        public string[] types { get; set; }
    }