Index XML Documents with VTD+XML

using System;
using com.ximpleware;

namespace accessIndex
{
    class accessIndex
    {
        static void Main(string[] args)
        {
            VTDGen vg = new VTDGen();
            try
            {
                VTDNav vn = vg.loadIndex("d:/codeProject/app3/po.vxl");
                AutoPilot ap = new AutoPilot(vn);
                ap.selectXPath("/purchaseOrder/item/USPrice/text()");
                int i = -1;
                while ((i = ap.evalXPath()) != -1)
                {
                    Console.WriteLine(" USPrice ==> " + vn.toString(i));
                }
            }
            catch (VTDException e)
            {
            }

        }
    }
}