IHasXmlNode Interface
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
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
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>
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.
Өнім | Нұсқалар |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
.NET кері байланысы
.NET — бастапқы коды ашық жоба. Пікір қалдыру үшін сілтемені таңдаңыз: