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POWCF DataContractSerializer Behavior
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  1. POWCF DataContractSerializer Behavior
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    copied!<p>I'm seeing some unusual behavior when using the DataContractSerializer. I have defined a message contract like so:</p> <pre><code>namespace MyNamespace.DataContracts { [MessageContract(WrapperName = "order", WrapperNamespace = @"http://example.com/v1/order")] public class MyOrder { [MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 1)] public MyStore store; [MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 2)] public MyOrderHeader orderHeader; [MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 3)] public List&lt;MyPayment&gt; payments; [MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 4)] public List&lt;MyShipment&gt; shipments; } . . </code></pre> <p>I'm sending it an XML message that looks like this:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;order xmlns="http://example.com/v1/order&gt; &lt;store&gt; ... &lt;/store&gt; &lt;orderHeader&gt; ... &lt;/orderHeader&gt; &lt;payments&gt; &lt;payment&gt; ... &lt;/payment&gt; &lt;/payments&gt; &lt;shipments&gt; &lt;shipment&gt; ... &lt;/shipment&gt; &lt;/shipments&gt; &lt;/order&gt; </code></pre> <p>My service deserializes this XML as expected. Inside my service, I'm using the DataContractSerializer to create an XML string and that's where things get weird. I'm using the serializer like this:</p> <pre><code>DataContractSerializer serializer = new DataContractSerializer(typeof(MyOrder)); using (MemoryStream ms = new MemoryStream()) { serializer.WriteObject(ms, order); ms.Position = 0; StreamReader sr = new StreamReader(ms); string outputMessage = sr.ReadToEnd(); } </code></pre> <p>Once this finishes, the outputMessage contains the following XML:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;MyOrder xmlns="http://example.com/v1/order" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"&gt; &lt;order&gt; &lt;store&gt; ... &lt;/store&gt; &lt;orderHeader&gt; ... &lt;/orderHeader&gt; &lt;payments&gt; &lt;payment&gt; ... &lt;/payment&gt; &lt;/payments&gt; &lt;shipments&gt; &lt;shipment&gt; ... &lt;/shipment&gt; &lt;/shipments&gt; &lt;/order&gt; &lt;/MyOrder&gt; </code></pre> <p>Needless to say, anything expecting to receive the original XML message will fail to parse this. So I guess I have two questions:</p> <ol> <li>Why is the DataContractSerializer adding the extra outer node to my XML output?</li> <li>Is there a way to stop it from doing this?</li> </ol> <p>Thanks.</p> <p>I should probably add this is with .NET 4.</p>
 

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