LookupNamespace Method
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IXmlNamespaceResolver.LookupNamespace Method (String)

 

Gets the namespace URI mapped to the specified prefix.

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

string LookupNamespace(
	string prefix
)

Parameters

prefix
Type: System.String

The prefix whose namespace URI you wish to find.

Return Value

Type: System.String

The namespace URI that is mapped to the prefix; null if the prefix is not mapped to a namespace URI.

System_CAPS_noteNote

Namespace URI-to-prefix mappings can change from node to node in an XML document. You cannot depend on the result of a lookup being consistent from one node to the next.

The following table describes how the default and built-in namespaces are handled by the LookupNamespace method.

Prefix

Return Value

xml

http://www.w3.org/XML/1998/namespace

xmlns

http://www.w3.org/2000/xmlns/

String.Empty (A default namespace has been assigned).

The currently assigned default namespace.

String.Empty (The default namespace has not been explicitly assigned).

String.Empty (The blank prefix is associated with elements that are not in any namespace).

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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