XNamespace.Xmlns Property

Gets the XNamespace object that corresponds to the xmlns URI (http://www.w3.org/2000/xmlns/).

Namespace:  System.Xml.Linq
Assembly:  System.Xml.Linq (in System.Xml.Linq.dll)

public static XNamespace Xmlns { get; }

Property Value

Type: System.Xml.Linq.XNamespace
The XNamespace that corresponds to the xmlns URI (http://www.w3.org/2000/xmlns/).

When you declare namespaces, the namespace attributes themselves are in the xmlns namespace. The W3C standard specifies that this namespace does not have to be declared as an attribute in the XML tree. It is a reserved namespace that is always automatically available in the XML parser.

The following example shows how to add a namespace to an XML tree. The namespace for the attribute that declares the namespace is the namespace returned by this property.

XNamespace aw = "http://www.adventure-works.com";
XElement root = new XElement(aw + "Root",
    new XAttribute(XNamespace.Xmlns + "aw", "http://www.adventure-works.com"),
    new XElement(aw + "Child", "content")
);

In Visual Basic, the preferred idiom is:

[vb]

Imports <xmlns:aw='http://www.adventure-works.com'>

Dim root As XElement = _
    <aw:Root>
        <aw:Child>content</aw:Child>
    </aw:Root>

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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