.NET Framework Class Library
XContainer.DescendantNodes Method
Returns a collection of the descendant nodes for this document or element, in document order.
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)
Syntax
Visual Basic
Public Function DescendantNodes As IEnumerable(Of XNode)
C#
public IEnumerable<XNode> DescendantNodes()
Visual C++
public:
IEnumerable<XNode^>^ DescendantNodes()
F#
member DescendantNodes : unit -> IEnumerable<XNode>
Return Value
Type: System.Collections.Generic.IEnumerable<XNode>An IEnumerable<T> of XNode containing the descendant nodes of the XContainer, in document order.
Remarks
Note that attributes are not considered to be nodes in LINQ to XML, so they will not be part of the collection that is returned by this method.
This method uses deferred execution.
Examples
The following example creates an XML tree, and then iterates through the DescendantNodes axis.
C#
XElement xmlTree = new XElement("Root", // Attributes are not nodes, so will not be returned by DescendantNodes. new XAttribute("Att1", "AttributeContent"), new XElement("Child", new XElement("GrandChild", "element content") ) ); IEnumerable<XNode> dnas = from node in xmlTree.DescendantNodes() select node; foreach (XNode node in dnas) { if (node is XElement) Console.WriteLine((node as XElement).Name); else Console.WriteLine(node); }
Visual Basic
' Attributes are not nodes, so will not be returned by DescendantNodes. Dim xmlTree As XElement = _ <Root Att1="AttributeContent"> <Child> <GrandChild>element content</GrandChild> </Child> </Root> Dim dnas = From node In xmlTree.DescendantNodes _ Select node For Each node In dnas If TypeOf node Is XElement Then Console.WriteLine(DirectCast(node, XElement).Name) Else Console.WriteLine(node) End If Next
This example produces the following output:
Child GrandChild element content
Version Information
.NET Framework
Supported in: 4, 3.5.NET Framework Client Profile
Supported in: 4, 3.5 SP1Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
See Also