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BaseURI Property

XmlTextReader.BaseURI Property

Gets the base URI of the current node.

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

public override string BaseURI { get; }

Property Value

Type: System.String
The base URI of the current node.

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.

A networked XML document is comprised of chunks of data aggregated using various W3C standard inclusion mechanisms and therefore contains nodes that come from different places. 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 displays the base URI for each of the nodes.

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

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

    try
    {           
        //Load the reader with the XML file.
        reader = new XmlTextReader("http://localhost/baseuri.xml");

        //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

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


<!-- XML fragment -->
<book genre="novel">
  <title>Pride And Prejudice</title>
</book>

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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