Google Geocoding Example API v3

geocoding.cs

public void GoogleGeoCode(string address, out double lat, out double lon)
{
        string url = "http://maps.googleapis.com/maps/api/geocode/json?sensor=false&address=" + address;

        var req = (HttpWebRequest)WebRequest.Create(url);
        var reader = new StreamReader(req.GetResponse().GetResponseStream());

        var body = reader.ReadToEnd();

        lat = double.Parse(Regex.Match(body, @"""lat\"" : ([\d\.]+)").Groups[1].Value);
        lon = double.Parse(Regex.Match(body, @"""lon"" : ([\d\.]+)").Groups[1].Value);
}