Programming XPath with VTD-XML

using System;
using System.Collections.Generic;
using System.Text;
using com.ximpleware;
namespace app4
{
    class Program
    {
        static void Main(string[] args)
        {
            VTDGen vg = new VTDGen();
            int i;
            AutoPilot ap = new AutoPilot();

            ap.selectXPath("/CATALOG/CD[PRICE < 10]");
            if (vg.parseFile("catalog.xml", false))
            {
                VTDNav vn = vg.getNav();
                ap.bind(vn);
                //XPath eval returns one node at a time
                while ((i = ap.evalXPath()) != -1)
                {
                    vn.push();
                    // get to the first child
                    if (vn.toElement(VTDNav.FIRST_CHILD, "TITLE"))
                    {
                        int j = vn.getText();
                        if (j != -1)
                            Console.WriteLine(" text node ==>" + vn.toString(j));
                    }
                    vn.pop();
                }
                ap.resetXPath();
            }
        }
    }
}