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XmlAttribute.BaseURI Property

Gets the base URI of the node.

[Visual Basic]
Overrides Public ReadOnly Property BaseURI As String
public override string BaseURI {get;}
public: __property String* get_BaseURI();
public override function get BaseURI() : String;

Property Value

The location from which the node was loaded or String.Empty if the node has no base URI. Attribute nodes have the same base URI as their owner element. If an attribute node does not have an owner element, BaseURI returns String.Empty.


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. The BaseURI tells you where these nodes came from.

For additional information on BaseURI and how it behaves with other node types, see XmlNode.BaseURI.

This property is a Microsoft extension to the Document Object Model (DOM).


[Visual Basic, C#, C++] The following example displays information on the attribute node, including its base URI .

[Visual Basic] 
Option Explicit
Option Strict

Imports System
Imports System.IO
Imports System.Xml

Public Class Sample
    Public Shared Sub Main()
        'Create the XmlDocument.
        Dim doc As New XmlDocument()
        'Display information on the attribute node. The value
        'returned for BaseURI is 'http://localhost/baseuri.xml'.
        Dim attr As XmlAttribute = doc.DocumentElement.Attributes(0)
        Console.WriteLine("Name of the attribute:  {0}", attr.Name)
        Console.WriteLine("Base URI of the attribute:  {0}", attr.BaseURI)
        Console.WriteLine("The value of the attribute:  {0}", attr.InnerText)
    End Sub 'Main 
End Class 'Sample

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

public class Sample
  public static void Main()
    //Create the XmlDocument.
    XmlDocument doc = new XmlDocument();
    //Display information on the attribute node. The value
    //returned for BaseURI is 'http://localhost/baseuri.xml'.
    XmlAttribute attr = doc.DocumentElement.Attributes[0];
    Console.WriteLine("Name of the attribute:  {0}", attr.Name);
    Console.WriteLine("Base URI of the attribute:  {0}", attr.BaseURI);
    Console.WriteLine("The value of the attribute:  {0}", attr.InnerText);


#using <mscorlib.dll>
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;

int main()
    //Create the XmlDocument.
    XmlDocument* doc = new XmlDocument();
    //Display information on the attribute node. The value
    //returned for BaseURI is 'http://localhost/baseuri.xml'.
    XmlAttribute* attr = doc->DocumentElement->Attributes->ItemOf[0];
    Console::WriteLine(S"Name of the attribute:  {0}",attr->Name);
    Console::WriteLine(S"Base URI of the attribute:  {0}",attr->BaseURI);
    Console::WriteLine(S"The value of the attribute:  {0}",attr->InnerText);


[Visual Basic, C#, C++] The sample uses the file, baseuri.xml, as input.

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

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.


Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

See Also

XmlAttribute Class | XmlAttribute Members | System.Xml Namespace | OwnerElement