Provides an iterator over a selected set of nodes.
Namespace: System.Xml.XPath
Assembly: System.Xml (in system.xml.dll)
Visual Basic (Declaration)
Public MustInherit Class XPathNodeIterator
Implements ICloneable, IEnumerable
Dim instance As XPathNodeIterator
public abstract class XPathNodeIterator : ICloneable, IEnumerable
public ref class XPathNodeIterator abstract : ICloneable, IEnumerable
public abstract class XPathNodeIterator implements ICloneable, IEnumerable
public abstract class XPathNodeIterator implements ICloneable, IEnumerable
An XPathNodeIterator object returned by the XPathNavigator class is not positioned on the first node in a selected set of nodes. A call to the MoveNext method of the XPathNodeIterator class must be made to position the XPathNodeIterator object on the first node in the selected set of nodes.
Notes to Inheritors
When you inherit from the XPathNodeIterator class, you must override the following members:
The following example uses the Select method of the XPathNavigator class to select a node set using the XPathNodeIterator class.
Dim document As XPathDocument = New XPathDocument("books.xml")
Dim navigator As XPathNavigator = document.CreateNavigator()
Dim nodes As XPathNodeIterator = navigator.Select("/bookstore/book")
Dim nodesNavigator As XPathNavigator = nodes.Current
Dim nodesText As XPathNodeIterator = nodesNavigator.SelectDescendants(XPathNodeType.Text, False)
While nodesText.MoveNext()
Console.Write(nodesText.Current.Name)
Console.WriteLine(nodesText.Current.Value)
End While
XPathDocument document = new XPathDocument("books.xml");
XPathNavigator navigator = document.CreateNavigator();
XPathNodeIterator nodes = navigator.Select("/bookstore/book");
XPathNavigator nodesNavigator = nodes.Current;
XPathNodeIterator nodesText = nodesNavigator.SelectDescendants(XPathNodeType.Text, false);
while (nodesText.MoveNext())
{
Console.Write(nodesText.Current.Name);
Console.WriteLine(nodesText.Current.Value);
}
The example takes the books.xml file as input.
<bookstore>
<book genre="autobiography" publicationdate="1981-03-22" 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="1967-11-17" 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="1991-02-15" ISBN="1-861001-57-6">
<title>The Gorgias</title>
<author>
<name>Plato</name>
</author>
<price>9.99</price>
</book>
</bookstore>
System.Object
System.Xml.XPath.XPathNodeIterator
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
.NET Framework
Supported in: 2.0, 1.1, 1.0