IXmlNamespaceResolver::LookupPrefix Method (String^)
Gets the prefix that is mapped to the specified namespace URI.
Assembly: System.Xml (in System.Xml.dll)
Parameters
- namespaceName
-
Type:
System::String^
The namespace URI whose prefix you wish to find.
Return Value
Type: System::String^The prefix that is mapped to the namespace URI; null if the namespace URI is not mapped to a prefix.
It is possible for a namespace URI to be mapped to multiple prefixes. Because the prefixes are not mapped in a predictable manner, you should not depend on getting back a particular prefix when a namespace URI is mapped to more than one prefix.
Note |
|---|
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 LookupPrefix method.
Namespace | Return value |
|---|---|
http://www.w3.org/XML/1998/namespace | xml |
http://www.w3.org/2000/xmlns/ | xmlns |
An empty namespace. | A default namespace that has not been defined. |
Available since 8
.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
