XmlValidatingReader.BaseURI Property

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

public override string? BaseURI { get; }

public override string BaseURI { get; }

member this.BaseURI : string

Public Overrides ReadOnly Property BaseURI As String

Property Value

The base URI of the current node.

Examples

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();
   }

}

using System;
using System.IO;
using System.Xml;

public class Sample
{
  public static void Main()
  {
    XmlValidatingReader reader = null;
    XmlTextReader txtreader = null;

    try
    {
        //Create the validating reader.
        txtreader = new XmlTextReader("http://localhost/uri.xml");
        reader = new 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!=null)
         reader.Close();
     }
  }
} // End class

Option Strict
Option Explicit

Imports System.IO
Imports System.Xml

Public Class Sample
   
   Public Shared Sub Main()
      Dim reader As XmlValidatingReader = Nothing
      Dim txtreader As XmlTextReader = Nothing
      
      Try
         'Create the validating reader.
         txtreader = New XmlTextReader("http://localhost/uri.xml")
         reader = New 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)
         End While
      
      Finally
         If Not (reader Is Nothing) Then
            reader.Close()
         End If
      End Try
   End Sub
End Class

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>.

Remarks

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.

Applies to

See also

• XmlReader