XPathNavigator.Evaluate Uses context to evaluate the XPathExpression : XPathNavigator « XML « C# / C Sharp

1. C# / C Sharp
2. XML
3. XPathNavigator

XPathNavigator.Evaluate Uses context to evaluate the XPathExpression

 
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();
        
        XPathNodeIterator nodes = navigator.Select("//book");
        XPathExpression query = nodes.Current.Compile("sum(descendant::price)");
        
        Double total = (double)navigator.Evaluate(query, nodes);
        Console.WriteLine("Total price for all books: {0}", total.ToString());
    }
}

   
  

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