XmlTextReader.LookupNamespace Method (String)

 
System_CAPS_noteNote

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Resolves a namespace prefix in the current element's scope.

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

public override string LookupNamespace(
	string prefix
)

Parameters

prefix
Type: System.String

The prefix whose namespace URI you want to resolve. To match the default namespace, pass an empty string. This string does not have to be atomized.

Return Value

Type: System.String

The namespace URI to which the prefix maps or null if no matching prefix is found.

Exception Condition
ArgumentNullException

The Namespaces property is set to true and the prefix value is null.

System_CAPS_noteNote

Starting with the .NET Framework 2.0, we recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.

In the following XML, 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>

.NET Framework
Available since 1.1
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