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IHasXmlNode Interface

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

For a list of all members of this type, see IHasXmlNode Members.

[Visual Basic]
Public Interface IHasXmlNode
[C#]
public interface IHasXmlNode
[C++]
public __gc __interface IHasXmlNode
[JScript]
public interface IHasXmlNode

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 the GetNode method to return the XmlNode representing the current position of the navigator.

Example

[Visual Basic, C#, C++] The following example uses the GetNode method to retrieve and modify the selected node.

[Visual Basic] 
Imports System
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

[C#] 
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);
    
  }
}

[C++] 
#using <mscorlib.dll>
#using <System.Xml.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::XPath;

int main() {
   XmlDocument* doc = new XmlDocument();
   doc -> Load(S"books.xml");

   // Create an XPathNavigator and select all books by Plato.
   XPathNavigator * nav = doc -> CreateNavigator();
   XPathNodeIterator * ni = nav -> Select(S"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 = S"12.95";
   Console::WriteLine(book -> OuterXml); 
}

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>

[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.

Requirements

Namespace: System.Xml

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

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

See Also

IHasXmlNode Members | System.Xml Namespace

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