Reading XML data from Google GeoCode (Maps) Service v3 : The Official Microsoft ASP.NET Forums

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data1025

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Reading XML data from Google GeoCode (Maps) Service v3

Apr 09, 2011 02:57 PM|LINK

Google Maps API has upgraded their geocoding service. The old style had each data element in a unique node, so I was reading each node using SelectSingleNode. Now, the node names are all the same, so my VB.net program is not working accurately, except on the lat/long parameters because those are still unique.

Here is the link to an address and how the API responds: http://maps.googleapis.com/maps/api/geocode/xml?address=1210%20cassat%20av,%20jacksonville,%20fl,%20USA&sensor=true

and here is my code:

Dim uriRequest As New Uri(GoogleMapsAPI_URL & _address & _output)
            Dim geoRequest As HttpWebRequest = WebRequest.Create(uriRequest)
            Dim geoResponse As HttpWebResponse = geoRequest.GetResponse()
            Dim sr As New StreamReader(geoResponse.GetResponseStream(), Encoding.UTF8)
            'instantiate new xml document to hold the google geo resulting xml
            Dim geoXml As New XmlDocument()

            geoXml.LoadXml(sr.ReadToEnd().ToString())

            'Dim TitleNode As XmlNodeList = geoXml.GetElementsByTagName("address_component")

            'Get County (administrative_area_level_2)

            _GeoCounty = geoXml.Item("/GeocodeResponse/result/address_component/[type=administrative_area_level_2]")

            _GeoCountyData = _GeoCounty.InnerXml.ToString()



            StatusLBL.Text = _GeoCountyData

            'Get Lat/Long
            _Latitude = geoXml.SelectSingleNode("/GeocodeResponse/result/geometry/location/lat")
            _Longitude = geoXml.SelectSingleNode("/GeocodeResponse/result/geometry/location/lng")
            _LatitudeValue = _Latitude.InnerText.ToString()
            _LongitudeValue = _Longitude.InnerText.ToString()