XML Criar

namespace PBServer.src.data.xml.parsers
{

 using PBServer;
 using PBServer.src.data.model;
 using PBServer.src.data.xml.holders;
 using System;
 using System.IO;
 using System.Xml;

 public class GameServerInfoParser
 {
 private GameServerInfoHolder _holder;
 private static GameServerInfoParser _instance;

 public GameServerInfoParser()
 {
 if (this._holder == null)
 {
 this._holder = GameServerInfoHolder.getInstance();
 }
 string path = "data//gameservers.xml";
 if (File.Exists(path))
 {
 this.parse(path);
 }
 else
 {
 CLogger.getInstance().info("[GameServerInfoParser]: No Have File: " + path);
 }
 if (this._holder != null)
 {
 this._holder.log();
 }
 }

 public static GameServerInfoParser getInstance()
 {
 if (_instance == null)
 {
 _instance = new GameServerInfoParser();
 }
 return _instance;
 }

 private void parse(string path)
 {
 XmlDocument document = new XmlDocument();
 FileStream inStream = new FileStream(path, FileMode.Open);
 if (inStream.Length == 0L)
 {
 CLogger.getInstance().info("[GameServerInfoParser]: File is Empty: " + path);
 }
 else
 {
 try
 {
 document.Load(inStream);
 for (XmlNode node = document.FirstChild; node != null; node = node.NextSibling)
 {
 if ("list".Equals(node.Name))
 {
 for (XmlNode node2 = node.FirstChild; node2 != null; node2 = node2.NextSibling)
 {
 if ("gameserver".Equals(node2.Name))
 {
 XmlNamedNodeMap attributes = node2.Attributes;
 this._holder.addGameServerInfo(new GameServerInfo(attributes.GetNamedItem("name").Value, int.Parse(attributes.GetNamedItem("id").Value), attributes.GetNamedItem("password").Value, int.Parse(attributes.GetNamedItem("type").Value), int.Parse(attributes.GetNamedItem("max_players").Value), attributes.GetNamedItem("ip").Value, int.Parse(attributes.GetNamedItem("port").Value)));
 }
 }
 }
 }
 }
 catch (XmlException exception)
 {
 CLogger.getInstance().info("[GameServerInfoParser]: Error in file: " + path);
 CLogger.getInstance().info("[GameServerInfoParser]: " + exception.Message);
 }
 inStream.Close();
 }
 }
 }
}

Minha debug ta dando erro Alguen sabe como posso criar essas xml que pede no codico , porfavor que suber criar , eu acradeço!

 XmlNamedNodeMap attributes = node2.Attributes;
 this._holder.addGameServerInfo(new GameServerInfo(attributes.GetNamedItem("name").Value, int.Parse(attributes.GetNamedItem("id").Value), attributes.GetNamedItem("password").Value, int.Parse(attributes.GetNamedItem("type").Value), int.Parse(attributes.GetNamedItem("max_players").Value), attributes.GetNamedItem("ip").Value, int.Parse(attributes.GetNamedItem("port").Value)));