Use XmlSerializer to add a namespace without a prefix

Question

I want my output to look like this

<OrderContainer xmlns="http://blabla/api/products" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">

So I added the following to my XmlSerializer

XmlSerializer x = new XmlSerializer(typeof(OrderContainer));
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "http://blabla/api/products");
ns.Add("i", "http://www.w3.org/2001/XMLSchema-instance");
// do stuff..
x.Serialize(stream, orderContainer, ns);

But now I get

<OrderContainer xmlns:i="http://www.w3.org/2001/XMLSchema-instance">

So how do I edit the default namespace?

My object definition is like:

[System.Runtime.Serialization.DataContractAttribute(Name="OrderContainer", Namespace="http://blabla/api/products")]
[System.SerializableAttribute()]
public partial class OrderContainer

Darin Dimitrov · Accepted Answer · 2009-12-07 17:44:01Z

10

You could use the XmlSerializer constructor which takes a default namespace in addition to the type you want to serialize:

var x = new XmlSerializer(
    typeof(OrderContainer), 
    "http://blabla/api/products");
var ns = new XmlSerializerNamespaces();
ns.Add("i", "http://www.w3.org/2001/XMLSchema-instance");
x.Serialize(stream, orderContainer, ns);

edited Dec 7, 2009 at 17:44

answered Dec 7, 2009 at 16:27

Darin Dimitrov

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Comments

John Saunders · Accepted Answer · 2009-12-07 23:25:46Z

2

You have to use [XmlElementAttribute], not [DataContractAttribute], if you wish to use the XML Serializer.

answered Dec 7, 2009 at 23:25

John Saunders

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1 Comment

Jan Jongboom Over a year ago

Yes, it were just some WCF generated entities; so they were decorated with the DataContractAttribute

Jan Jongboom · Accepted Answer · 2009-12-07 16:25:52Z

0

Ah, had to use DataContractSerializer, which automatically generates correct XML, including the namespaces.

DataContractSerializer dcs = new DataContractSerializer(typeof(OrderContainer));
//do stuff..
dcs.WriteObject(s, orderContainer);

answered Dec 7, 2009 at 16:25

Jan Jongboom

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