WCF contracts - namespaces and SerializationExceptions
- by qntmfred
I am using a third party web service that offers the following calls and responses
http://api.athirdparty.com/rest/foo?apikey=1234
<response>
<foo>this is a foo</foo>
</response>
and
http://api.athirdparty.com/rest/bar?apikey=1234
<response>
<bar>this is a bar</bar>
</response>
This is the contract and supporting types I wrote
[ServiceContract]
[XmlSerializerFormat]
public interface IFooBarService
{
[OperationContract]
[WebGet(
BodyStyle = WebMessageBodyStyle.Bare,
ResponseFormat = WebMessageFormat.Xml,
UriTemplate = "foo?key={apikey}")]
FooResponse GetFoo(string apikey);
[OperationContract]
[WebGet(
BodyStyle = WebMessageBodyStyle.Bare,
ResponseFormat = WebMessageFormat.Xml,
UriTemplate = "bar?key={apikey}")]
BarResponse GetBar(string apikey);
}
[XmlRoot("response")]
public class FooResponse
{
[XmlElement("foo")]
public string Foo { get; set; }
}
[XmlRoot("response")]
public class BarResponse
{
[XmlElement("bar")]
public string Bar { get; set; }
}
and then my client looks like this
static void Main(string[] args)
{
using (WebChannelFactory<IFooBarService> cf = new WebChannelFactory<IFooBarService>("thirdparty"))
{
var channel = cf.CreateChannel();
FooResponse result = channel.GetFoo("1234");
}
}
When I run this I get the following exception
Unable to deserialize XML body with root name 'response' and root namespace '' (for operation 'GetFoo' and contract ('IFooBarService', 'http://tempuri.org/')) using XmlSerializer. Ensure that the type corresponding to the XML is added to the known types collection of the service.
If I comment out the GetBar operation from IFooBarService, it works fine. I know I'm missing an important concept here - just don't know quite what to look for. What is the proper way to construct my contract types, so that they can be properly deserialized?
