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Attribute Method

XElement.Attribute Method

Returns the XAttribute of this XElement that has the specified XName.

Namespace:  System.Xml.Linq
Assemblies:   System.Xml.Linq (in System.Xml.Linq.dll)
  System.Xml.XDocument (in System.Xml.XDocument.dll)

public XAttribute Attribute(
	XName name
)

Parameters

name
Type: System.Xml.Linq.XName

The XName of the XAttribute to get.

Return Value

Type: System.Xml.Linq.XAttribute
An XAttribute that has the specified XName; null if there is no attribute with the specified name.

Some axis methods return collections of elements or attributes. This method returns only a single attribute. Sometimes this is referred to as a singleton (in contrast to a collection).

Visual Basic users can use the integrated attribute axis to retrieve the value of an attribute with a specified name.

The following example creates an element with an attribute. It then retrieves the attribute using this method.

XElement xmlTree = new XElement("Root",
    new XAttribute("Att", "attribute content")
);
XAttribute att = xmlTree.Attribute("Att");
Console.WriteLine(att);

This example produces the following output:

Att="attribute content"

The following is the same example, but in this case the XML is in a namespace. For more information, see Working with XML Namespaces.

XNamespace aw = "http://www.adventure-works.com";
XElement xmlTree = new XElement(aw + "Root",
    new XAttribute(XNamespace.Xmlns + "aw", "http://www.adventure-works.com"),
    new XAttribute(aw + "Att", "attribute content")
);
XAttribute att = xmlTree.Attribute(aw + "Att");
Console.WriteLine(att);

This example produces the following output:

aw:Att="attribute content"

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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