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XmlReader.LookupNamespace Method

When overridden in a derived class, resolves a namespace prefix in the current element's scope.

Namespace: System.Xml
Assembly: System.Xml (in system.xml.dll)

public abstract string LookupNamespace (
	string prefix
)
public abstract String LookupNamespace (
	String prefix
)
public abstract function LookupNamespace (
	prefix : String
) : String

Parameters

prefix

The prefix whose namespace URI you want to resolve. To match the default namespace, pass an empty string.

Return Value

The namespace URI to which the prefix maps or a null reference (Nothing in Visual Basic) if no matching prefix is found.

In the following XML string, if the reader is positioned on the href attribute, the prefix a is resolved by calling reader.LookupNamespace("a"). The returned string is urn:456.

<root xmlns:a="urn:456">
  <item>
  <ref href="a:b"/>
  </item>
 </root>

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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