XmlReader.NamespaceURI Property

 

When overridden in a derived class, 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 MustOverride ReadOnly Property NamespaceURI As String

Property Value

Type: System.String

The namespace URI of the current node; otherwise an empty string.

Exception Condition
InvalidOperationException

An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message “An asynchronous operation is already in progress.”

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.

Dim reader As XmlReader = XmlReader.Create("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)
    Else
      Console.Write("<{0}:{1}>", reader.Prefix, reader.LocalName)
      Console.WriteLine(" The namespace URI is " + reader.NamespaceURI)
    End If
  End If
End While
reader.Close()

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

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

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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