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XmlTextReader.NamespaceURI Property

Gets the namespace URI (as defined in the W3C Namespace specification) of the node on which the reader is positioned.

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

Public Overrides ReadOnly Property NamespaceURI As String

Property Value

Type: System.String
The namespace URI of the current node; otherwise an empty string.


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.

This property is relevant to Element and Attribute nodes only.

The following example displays the local name of each node, and, if they exist, the prefix and namespace URI.

Imports System
Imports System.IO
Imports System.Xml

Public Class Sample

    Public Shared Sub Main()
        Dim reader As XmlTextReader = Nothing 

            ' Load the reader with the XML file.
            reader = New XmlTextReader("book2.xml")

            ' Parse the file.  If they exist, display the prefix and  
            ' namespace URI of each node. 
            While reader.Read()
                If reader.IsStartElement() Then 
                    If reader.Prefix = String.Empty Then
                        Console.WriteLine("<{0}>", reader.LocalName)
                        Console.Write("<{0}:{1}>", reader.Prefix, reader.LocalName)
                        Console.WriteLine(" The namespace URI is " & reader.NamespaceURI)
                    End If 
                End If 
            End While 

            If Not (reader Is Nothing) Then
            End If 
        End Try 
    End Sub 'Main 
End Class 'Sample

The example uses the file, book2.xml, as input.

<book xmlns:bk='urn:samples'>
  <title>Pride And Prejudice</title>

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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