Selects a collection of elements using an XPath expression.
(in System.Xml.Linq.dll)
Visual Basic (Declaration)
<ExtensionAttribute> _
Public Shared Function XPathSelectElements ( _
node As XNode, _
expression As String _
) As IEnumerable(Of XElement)
Dim node As XNode
Dim expression As String
Dim returnValue As IEnumerable(Of XElement)
returnValue = node.XPathSelectElements(expression)
public static IEnumerable<XElement> XPathSelectElements(
this XNode node,
string expression
)
[ExtensionAttribute]
public:
static IEnumerable<XElement^>^ XPathSelectElements(
XNode^ node,
String^ expression
)
public static function XPathSelectElements(
node : XNode,
expression : String
) : IEnumerable<XElement>
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type XNode. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Although the ordering of returned collections is not specified in the XML XPath Language 1.0 Recommendation, this extension method returns nodes in document order.
Note that nodes are returned in document order even when you use a reverse axis, such as preceding-sibling or ancestor-or-self.
The following example creates a small XML tree and uses XPathSelectElements to select a set of elements.
XElement root = new XElement("Root",
new XElement("Child1", 1),
new XElement("Child1", 2),
new XElement("Child1", 3),
new XElement("Child2", 4),
new XElement("Child2", 5),
new XElement("Child2", 6)
);
IEnumerable<XElement> list = root.XPathSelectElements("./Child2");
foreach (XElement el in list)
Console.WriteLine(el);
Dim root As XElement = _
<Root>
<Child1>1</Child1>
<Child1>2</Child1>
<Child1>3</Child1>
<Child2>4</Child2>
<Child2>5</Child2>
<Child2>6</Child2>
</Root>
Dim list As IEnumerable(Of XElement) = root.XPathSelectElements("./Child2")
For Each el As XElement In list
Console.WriteLine(el)
Next
This example produces the following output:
<Child2>4</Child2>
<Child2>5</Child2>
<Child2>6</Child2>
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
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
Reference