命名空间可以使用子类别中的XmlNamespaceDeclarations加入至任何XML项目。

[XmlNamespaceDeclarations]
 public XmlSerializerNamespaces xmlns = new XmlSerializerNamespaces(new[]{new XmlQualifiedName("sig", "urn:oasis:names:specification:ubl:schema:xsd:CommonSignatureComponents-2")});

示例代码

[Serializable]
[XmlRoot(ElementName = "root")]
public class RootClass
{
    [XmlElement(ElementName = "body", Namespace = "httpenv")]
    public BodyClass body = new BodyClass();
}

[Serializable]
public class BodyClass
{
    [XmlElement(ElementName = "element", Namespace = "httpsos")]
    public SOSClass element = new SOSClass();
}

[Serializable]
public class SOSClass
{
    // This will be used by XML serializer to determine the namespaces
    [XmlNamespaceDeclarations]
    public XmlSerializerNamespaces xmlns = new XmlSerializerNamespaces( new[] { new XmlQualifiedName("sos", "httpsos"), });
}