XmlValidatingReader.LookupNamespace(String) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Resolves a namespace prefix in the current element's scope.
public:
override System::String ^ LookupNamespace(System::String ^ prefix);
public override string? LookupNamespace (string prefix);
public override string LookupNamespace (string prefix);
override this.LookupNamespace : string -> string
Public Overrides Function LookupNamespace (prefix As String) As String
Parameters
- prefix
- String
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The XmlValidatingReader class is obsolete in .NET Framework 2.0. You can create a validating XmlReader instance by using the XmlReaderSettings class and the Create method. For more information, see the Remarks section of the XmlReader reference page.
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
.
<root xmlns:a="urn:456">
<item>
<ref href="a:b"/>
</item>
</root>
Applies to
See also
反馈
https://aka.ms/ContentUserFeedback。
即将发布:在整个 2024 年,我们将逐步淘汰作为内容反馈机制的“GitHub 问题”,并将其取代为新的反馈系统。 有关详细信息,请参阅:提交和查看相关反馈