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    copied!<p>You can't really use the <code>DataContractSerializer</code> (DCS) to deserialize the response from that request, you need to use the <code>XmlSerializer</code>. DCS doesn't support unwrapped collections, which is what the response contains - like the one shown below.</p> <pre><code>&lt;a&gt; &lt;b/&gt; &lt;c/&gt; &lt;c/&gt; &lt;c/&gt; &lt;/a&gt; </code></pre> <p>The DCS only supports collections when they're wrapped in their own element:</p> <pre><code>&lt;a&gt; &lt;b/&gt; &lt;cs&gt; &lt;c/&gt; &lt;c/&gt; &lt;c/&gt; &lt;/cs&gt; &lt;/a&gt; </code></pre> <p>The <code>XmlSerializer</code> does support such collections. The code below shows a partial class structure for deserializing a response from the Google geocoding XML.</p> <pre><code>public class StackOverflow_7521821 { [XmlRoot(ElementName = "GeocodeResponse", Namespace = "")] public class GeocodeResponse { [XmlElement(ElementName = "status")] public GeocodeResponseStatusCode Status; [XmlElement(ElementName = "result")] public List&lt;GeocodeResponseResult&gt; Results; } [XmlType(Namespace = "")] public class GeocodeResponseResult { [XmlElement(ElementName = "type")] public List&lt;string&gt; Types; [XmlElement(ElementName = "formatted_address")] public string FormattedAddress; [XmlElement(ElementName = "address_component")] public List&lt;GeocodeResponseAddressComponent&gt; AddressComponents; [XmlElement(ElementName = "geometry")] public GeocodeResponseResultGeometry Geometry; } [XmlType(Namespace = "")] public class GeocodeResponseAddressComponent { [XmlElement(ElementName = "long_name")] public string LongName; [XmlElement(ElementName = "short_name")] public string ShortName; [XmlElement(ElementName = "type")] public List&lt;string&gt; Types; } [XmlType(Namespace = "")] public class GeocodeResponseResultGeometry { [XmlElement(ElementName = "location")] public Location Location; [XmlElement(ElementName = "location_type")] public GeocodeResponseResultGeometryLocationType LocationType; [XmlElement(ElementName = "viewport")] public GeocodeResponseResultGeometryViewport Viewport; } [XmlType(Namespace = "")] public class GeocodeResponseResultGeometryViewport { [XmlElement(ElementName = "southwest")] public Location Southwest; [XmlElement(ElementName = "northeast")] public Location Northeast; } public enum GeocodeResponseStatusCode { OK, ZERO_RESULTS, OVER_QUERY_LIMIT, REQUEST_DENIED, INVALID_REQUEST, } public enum GeocodeResponseResultGeometryLocationType { ROOFTOP, RANGE_INTERPOLATED, GEOMETRIC_CENTER, APPROXIMATE, } [XmlType(Namespace = "")] public class Location { [XmlElement(ElementName = "lat")] public string Lat; [XmlElement(ElementName = "lng")] public string Lng; } public static void Test() { XmlSerializer xs = new XmlSerializer(typeof(GeocodeResponse)); WebClient c = new WebClient(); byte[] response = c.DownloadData("http://maps.googleapis.com/maps/api/geocode/xml?address=1+Microsoft+Way,+Redmond,+WA&amp;sensor=true"); MemoryStream ms = new MemoryStream(response); GeocodeResponse geocodeResponse = (GeocodeResponse)xs.Deserialize(ms); Console.WriteLine(geocodeResponse); c = new WebClient(); response = c.DownloadData("http://maps.googleapis.com/maps/api/geocode/xml?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&amp;sensor=true"); ms = new MemoryStream(response); geocodeResponse = (GeocodeResponse)xs.Deserialize(ms); Console.WriteLine(geocodeResponse); } } </code></pre>
 

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