WCF DataContractSerializer Behavior
- by sbanwart
I'm seeing some unusual behavior when using the DataContractSerializer. I have defined a message contract like so:
namespace MyNamespace.DataContracts
{
[MessageContract(WrapperName = "order", WrapperNamespace = @"http://example.com/v1/order")]
public class MyOrder
{
[MessageBodyMember(Namespace = @"http://http://example.com/v1/order", Order = 1)]
public MyStore store;
[MessageBodyMember(Namespace = @"http://http://example.com/v1/order", Order = 2)]
public MyOrderHeader orderHeader;
[MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 3)]
public List<MyPayment> payments;
[MessageBodyMember(Namespace = @"http://example.com/v1/order", Order = 4)]
public List<MyShipment> shipments;
}
.
.
I'm sending it an XML message that looks like this:
<?xml version="1.0" encoding="utf-8"?>
<order xmlns="http://example.com/v1/order>
<store>
...
</store>
<orderHeader>
...
</orderHeader>
<payments>
<payment>
...
</payment>
</payments>
<shipments>
<shipment>
...
</shipment>
</shipments>
</order>
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:
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();
}
Once this finishes, the outputMessage contains the following XML:
<?xml version="1.0" encoding="utf-8"?>
<MyOrder xmlns="http://example.com/v1/order" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<order>
<store>
...
</store>
<orderHeader>
...
</orderHeader>
<payments>
<payment>
...
</payment>
</payments>
<shipments>
<shipment>
...
</shipment>
</shipments>
</order>
</MyOrder>
Needless to say, anything expecting to receive the original XML message will fail to parse this. So I guess I have two questions:
Why is the DataContractSerializer
adding the extra outer node to my
XML output?
Is there a way to stop it from doing
this?
Thanks.
