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POProblem with deserializing JSON on datamember "__type"
 

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  1. POProblem with deserializing JSON on datamember "__type"
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    <p>In short, i'm trying to deserialize a JSON response from the Bing Maps Geocoding REST API,</p> <p>I created my Response Class, and now when I'm trying to actually deserialize a response, i'm getting the following error:</p> <p>Type '{0}' with data contract name '{1}:{2}' is not expected. Consider using a DataContractResolver or add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.</p> <p>it's trying to deserialize this line of JSON, and fails:</p> <pre><code>"__type": "Location:http:\/\/schemas.microsoft.com\/search\/local\/ws\/rest\/v1", </code></pre> <p>My response class looks like this</p> <pre><code> [DataContract] public class GeoResponse { [DataMember(Name = "statusDescription")] public string StatusDescription { get; set; } [DataMember(Name = "statusCode")] public string StatusCode { get; set; } [DataMember(Name = "resourceSets")] public ResourceSet[] resourceSets { get; set; } [DataContract] public class ResourceSet { [DataMember(Name = "__type", IsRequired=false)] public string type { get; set; } [DataMember(Name = "estimatedTotal")] public string EstimatedTotal { get; set; } [DataMember(Name = "resources")] public List&lt;Resources&gt; resources { get; set; } [DataContract] public class Resources { [DataMember(Name = "name")] public string Name { get; set; } [DataMember(Name = "point")] public Point point { get; set; } [DataContract] public class Point { [DataMember(Name = "type")] public string Type { get; set; } [DataMember(Name = "coordinates")] public string[] Coordinates { get; set; } } [DataMember(Name = "address")] public Address address { get; set; } [DataContract] public class Address { [DataMember(Name = "addressLine")] public string AddressLine { get; set; } [DataMember(Name = "countryRegion")] public string CountryRegion { get; set; } [DataMember(Name = "formattedAddress")] public string FormattedAddress { get; set; } [DataMember(Name = "locality")] public string Locality { get; set; } [DataMember(Name = "postalCode")] public string PostalCode { get; set; } } [DataMember(Name = "confidence")] public string Confidence { get; set; } [DataMember(Name = "entityType")] public string EntityType { get; set; } } } } } </code></pre> <p>My method i'm using to deserialize my JSON response:</p> <pre><code>private static GeoResponse CallGeoWS(string address) { string url = string.Format( "http://dev.virtualearth.net/REST/v1/Locations?q={0}&amp;key={1}", HttpUtility.UrlEncode(address), bingkey ); var request = (HttpWebRequest)HttpWebRequest.Create(url); request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate"); request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate; DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(GeoResponse)); var res = (GeoResponse)serializer.ReadObject(request.GetResponse().GetResponseStream()); return res; } </code></pre>
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