XPathNodeIterator : XPath « XML « C# / C Sharp



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.Xml.XPath;

public class MainClass {
    public static void Main() {
        XPathDocument doc = new XPathDocument("books.xml");
        XPathNavigator nav = ((IXPathNavigable)doc).CreateNavigator();
        XPathNodeIterator iter = nav.Select("/bookstore/book");
        while (iter.MoveNext()) {
            XPathNodeIterator newIter = iter.Current.SelectDescendants(XPathNodeType.Element, false);
            while (newIter.MoveNext())
                Console.WriteLine(newIter.Current.Name + ": " + newIter.Current.Value);

        Console.WriteLine("Total Cost = " + nav.Evaluate("sum(/bookstore/book/price)"));


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11.Returns the string result from evaluating an xpath expression against the given document and context.
12.Gets the text value from the element located by the given XPath.
13.Returns the inner text of the single node selected from the specified xpath if found; otherwise, null.
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15.Schema Reference Util