This documentation is archived and is not being maintained.

Extensions Class

Contains the LINQ to XML extension methods.

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

public static class Extensions

Most of the LINQ to XML extension methods are axis methods that are used in LINQ queries. The methods in this class operate on collections and return collections. These methods enumerate the source collection, call the appropriate axis method on each item in the collection, and concatenate the results.

The two Remove extension methods are not axis methods, however. These methods remove attributes or nodes from the XML tree.

Note that there is another category of axis methods, implemented in the XElement, XDocument, and XNode classes. These other axis methods operate on a single object, and return a collection of XElement, XAttribute, or XNode objects.

All of the axis extension methods use deferred execution.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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