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Extensions.XPathSelectElement Method (XNode, String)

Selects an XElement using a XPath expression.

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

public static XElement XPathSelectElement(
	this XNode node,
	string expression
)

Parameters

node
Type: System.Xml.Linq.XNode

The XNode on which to evaluate the XPath expression.

expression
Type: System.String

A String that contains an XPath expression.

Return Value

Type: System.Xml.Linq.XElement
An XElement, or null.

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).

The following example creates a small XML tree and uses XPathSelectElement to select a single element.

XElement root = new XElement("Root",
    new XElement("Child1", 1),
    new XElement("Child2", 2),
    new XElement("Child3", 3),
    new XElement("Child4", 4),
    new XElement("Child5", 5),
    new XElement("Child6", 6)
);
XElement el = root.XPathSelectElement("./Child4");
Console.WriteLine(el);

This example produces the following output:

<Child4>4</Child4>

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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