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XElement.GetDefaultNamespace Method

Gets the default XNamespace of this XElement.

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

'Declaration
Public Function GetDefaultNamespace As XNamespace
'Usage
Dim instance As XElement 
Dim returnValue As XNamespace 

returnValue = instance.GetDefaultNamespace()

Return Value

Type: System.Xml.Linq.XNamespace
An XNamespace that contains the default namespace of this XElement.

Namespace declarations may be persisted as attributes in the XML tree. These special attributes declare namespaces, including default namespaces. This method finds the namespace declaration that declares the default namespace, if there is one, and returns the XNamespace for the default namespace.

If there is no attribute that declares the default namespace, then this method returns XNamespace.None.

When creating XML trees using C#, even if an XML tree would be serialized with a default namespace, if the namespace is not persisted in the XML tree as an attribute, this method will not report the namespace as the default namespace.

When creating XML trees using Visual Basic and XML literals, if you create the XML in a default namespace using the Imports statement, then a namespace attribute will be created in the tree by the Visual Basic compiler, and this method will report that namespace.

The following example creates an XML tree that has a default namespace. It then uses this method to retrieve the default namespace.

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

Module Module1
    Sub Main()
        Dim e As XElement = <root/>
        Console.WriteLine("Default namespace: {0}", e.GetDefaultNamespace())
    End Sub
End Module

This example produces the following output:

Default namespace: http://www.adventure-works.com

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5

.NET Compact Framework

Supported in: 3.5

XNA Framework

Supported in: 3.0

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