using System.Xml;
using System;
using System.IO;
using System.Text;
using System.Reflection;
using System.Xml.XPath;
using System.Xml.Xsl;

namespace NestXML
{
	class Class1
	{
		static void Main(string[] args)
		{
			const int NODE_DEPTH = 20000;
			int i;
			Console.WriteLine ( "The deeply nested XML file is being created.");
			File.Delete( "deep.xml" );
			StreamWriter streamWriter = File.CreateText( "deep.xml" );
			streamWriter.Write("<?xml version='1.0' ?>");
			for ( i=1; i<=NODE_DEPTH; i++ )
			{
				streamWriter.Write( "<N_" + i.ToString() + ">" );
			}
			for ( i=NODE_DEPTH; i>=1; i-- )
			{
				streamWriter.Write( "</N_" + i.ToString() + ">" );
			}
			streamWriter.Close();
			
			XmlDocument doc = new XmlDocument();
			doc.PreserveWhitespace = true;
			try
			{
				doc.Load( new XmlTextReader( "deep.xml" ) );
				Console.WriteLine( "The deep.xml file has been successfully loaded." );
			}
			catch ( Exception ex )
			{
				Console.WriteLine( "The deep.xml file could not be loaded. The exception follows:" );
				Console.WriteLine ( ex.Message );
			}
			Console.WriteLine( "Press ENTER to exit." );
			Console.ReadLine();
		}
	}
}