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XmlValidatingReader::BaseURI Property

 

Gets the base URI of the current node.

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

public:
property String^ BaseURI {
	virtual String^ get() override;
}

Property Value

Type: System::String^

The base URI of the current node.

System_CAPS_noteNote

The XmlValidatingReader class is obsolete in .NET Framework 2.0.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.

A networked XML document is comprised of chunks of data aggregated by using various World Wide Web Consortium (W3C) standard inclusion mechanisms and therefore contains nodes that come from different places. document type definition (DTD) entities are an example of this, but this is not limited to DTDs. The base URI tells you where these nodes came from. If there is no base URI for the nodes being returned (for example, they were parsed from an in-memory string), String.Empty is returned.

The following example parses a file and displays the base URI of each node.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlValidatingReader^ reader = nullptr;
   XmlTextReader^ txtreader = nullptr;
   try
   {

      //Create the validating reader.
      txtreader = gcnew XmlTextReader( "http://localhost/uri.xml" );
      reader = gcnew XmlValidatingReader( txtreader );
      reader->ValidationType = ValidationType::None;

      //Parse the file and display the base URI for each node.
      while ( reader->Read() )
      {
         Console::WriteLine( "({0}) {1}", reader->NodeType, reader->BaseURI );
      }
   }
   finally
   {
      if ( reader != nullptr )
            reader->Close();
   }

}

The example uses the file, uri.xml, as input.


<!-- XML fragment -->
<!DOCTYPE book [<!ENTITY s SYSTEM "tmp/style.xml">]>
<book genre="novel">
  <title>Pride And Prejudice</title>
  <misc>&s;</misc>
</book>

The style.xml file contains the XML text <style>hardcover</style>.

.NET Framework
Available since 1.1
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