IHasXmlNode Interface

Definition

Namespace:

System.Xml

Assembly:

System.Xml.ReaderWriter.dll

Enables a class to return an XmlNode from the current context or position.

public interface class IHasXmlNode

public interface IHasXmlNode

type IHasXmlNode = interface

Public Interface IHasXmlNode

Examples

The following example uses the GetNode method to retrieve and modify the selected node.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::XPath;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->Load( "books.xml" );
   
   // Create an XPathNavigator and select all books by Plato.
   XPathNavigator^ nav = doc->CreateNavigator();
   XPathNodeIterator^ ni = nav->Select("descendant::book[author/name='Plato']");
   ni->MoveNext();
   
   // Get the first matching node and change the book price.
   XmlNode^ book = dynamic_cast<IHasXmlNode^>(ni->Current)->GetNode();
   book->LastChild->InnerText = "12.95";
   Console::WriteLine( book->OuterXml );
}

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

public class Sample
{
  public static void Main()
  {
     XmlDocument doc = new XmlDocument();
     doc.Load("books.xml");

     // Create an XPathNavigator and select all books by Plato.
     XPathNavigator nav = doc.CreateNavigator();
     XPathNodeIterator ni = nav.Select("descendant::book[author/name='Plato']");
     ni.MoveNext();

     // Get the first matching node and change the book price.
     XmlNode book = ((IHasXmlNode)ni.Current).GetNode();
     book.LastChild.InnerText = "12.95";
     Console.WriteLine(book.OuterXml);
  }
}

Imports System.IO
Imports System.Xml
Imports System.Xml.XPath

public class Sample

  public shared sub Main()

     Dim doc as XmlDocument = new XmlDocument()
     doc.Load("books.xml")
                         
     ' Create an XPathNavigator and select all books by Plato.
     Dim nav as XPathNavigator = doc.CreateNavigator()
     Dim ni as XPathNodeIterator = nav.Select("descendant::book[author/name='Plato']")
     ni.MoveNext()

     ' Get the first matching node and change the book price.
     Dim book as XmlNode = CType(ni.Current, IHasXmlNode).GetNode()
     book.LastChild.InnerText = "12.95"
     Console.WriteLine(book.OuterXml)
    
  end sub
end class

The example uses the file books.xml as input.

<bookstore>
  <book genre="autobiography" publicationdate="1981" ISBN="1-861003-11-0">
    <title>The Autobiography of Benjamin Franklin</title>
    <author>
      <first-name>Benjamin</first-name>
      <last-name>Franklin</last-name>
    </author>
    <price>8.99</price>
  </book>
  <book genre="novel" publicationdate="1967" ISBN="0-201-63361-2">
    <title>The Confidence Man</title>
    <author>
      <first-name>Herman</first-name>
      <last-name>Melville</last-name>
    </author>
    <price>11.99</price>
  </book>
  <book genre="philosophy" publicationdate="1991" ISBN="1-861001-57-6">
    <title>The Gorgias</title>
    <author>
      <name>Plato</name>
    </author>
    <price>9.99</price>
  </book>
</bookstore>

Remarks

The IHasXmlNode interface provides an interface that enables a class to return an XmlNode from the current context or position. It is implemented by XPathNavigator objects that operate over classes that have XmlNode nodes. For example, if the XPathNavigator object is created by an XmlDocument, you can use the GetNode method to return the XmlNode representing the current position of the navigator.

Methods

GetNode()

Returns the XmlNode for the current position.