Parameters

prefix

The prefix whose namespace Uniform Resource Identifier (URI) you want to resolve. To match the default namespace, pass an empty string.

Returns

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

Remarks

Note:

The System.Xml.XmlValidatingReader class is obsolete in dnprdnext. You can create a validating System.Xml.XmlReader instance by using the System.Xml.XmlReaderSettings class and the erload:System.Xml.XmlReader.Create method. For more information, see Validating XML Data with XmlReader.

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

Example

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

Requirements