Mega Code Archive
XPathNavigator Evaluate evaluates XPath expression and returns typed result
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using System;
using System.Linq;
using System.Xml;
using System.Xml.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Xml.XPath;
public class MainClass{
public static void Main(){
XPathDocument document = new XPathDocument("books.xml");
XPathNavigator navigator = document.CreateNavigator();
Double total = (double)navigator.Evaluate("sum(descendant::book/price)");
Console.WriteLine("Total price for all books: {0}", total.ToString());
}
}
/*
<?xml version="1.0" encoding="utf-8" ?>
<bookstore>
<book genre="Programming" publicationdate="2010-03-22" ISBN="1-111111-11-0">
<title>C#</title>
<author>
<first-name>A</first-name>
<last-name>B</last-name>
</author>
<price>8.99</price>
</book>
<book genre="data" publicationdate="2010-11-17" ISBN="0-201-11111-2">
<title>XML</title>
<author>
<first-name>D</first-name>
<last-name>E</last-name>
</author>
<price>11.99</price>
</book>
</bookstore>
*/
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