XML Serialization + Namespaces (C#)

Question

I need to generate something like this:

<AmazonEnvelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="amzn-envelope.xsd">
<Header>
...
</Header>
</AmazonEnvelope>

I was trying something like this but it's not fully correctly:

XmlSerializerNamespaces nms = new XmlSerializerNamespaces();
        nms.Add("xsi", "http://www.w3.org/2001/XMLSchema-instance");
        nms.Add("noNamespaceSchemaLocation", "amzn-envelope.xsd");



        XmlSerializer serializer = new XmlSerializer(typeof(XMLAmazonEnvelope));
        StreamWriter writer = new StreamWriter(path);

        serializer.Serialize(writer, objectToSave,nms);
        writer.Close();

And result is:

<?xml version="1.0" encoding="utf-8"?>
<xsi:AmazonEnvelope xmlns:noNamespaceSchemaLocation="amzn-envelope.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<xsi:Header>
...
</xsi:Header>
</xsi:AmazonEnvelope>

And this is not exactly what I want. Any ideas, what should be done differently?

xsi:noNamespaceSchemaLocation="amzn-envelope.xsd" isn't a namespace declaration. You'll have to add an attribute noNamespaceShcemaLocation in the xsi namespace to the AmazonEnvelope element, but I can't really see a straightforward way to do it in the documentation unless you have access to the source of XMLAmazonEnvelope. In that case you could add a field/property to that class annotated with [XmlAttribute] with the name noNamespaceSchemaLocation and the value you want. — millimoose
– millimoose, Commented Jun 14, 2012 at 21:11
Or maybe it's possible with access to the source by using XmlAttributeOverrides, but I've no idea exactly how that API works. — millimoose
– millimoose, Commented Jun 14, 2012 at 21:29
XmlAttribute is only allow for fields, properties, indexes and I have: — user1359657
– user1359657, Commented Jun 14, 2012 at 21:36
[XmlRoot(ElementName = "AmazonEnvelope", Namespace = "w3.org/2001/XMLSchema-instance")] [XmlAttribute(AttributeName="noNamespaceSchemaLocation")] public class XMLAmazonEnvelope { private ObservableCollection<XMLMessage> _Messages = new ObservableCollection<XMLMessage>(); [XmlElement(ElementName="Header")] public XMLHeader Header{get;set;} .... — user1359657
– user1359657, Commented Jun 14, 2012 at 21:37
So attach the [XmlAttribute(AttributeName="noNamespaceSchemaLocation")] to a string field with the value "amzn-envelope.xsd". (And use the correct namespace in the attribute.) — millimoose
– millimoose, Commented Jun 14, 2012 at 21:40

Community · Accepted Answer · 2017-05-23 10:26:45Z

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Question already solved here:

How to add xml namespaces (Amazon Envelope)

edited May 23, 2017 at 10:26

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answered Jun 14, 2012 at 22:09

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