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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)

'Declaration
Public MustOverride Function LookupNamespace ( _
	prefix As String _
) As String

Parameters

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

Return Value

Type: System.String
The namespace URI to which the prefix maps or Nothing 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>

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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