Creating a highly manageable TreeView control using Microsoft Web TreeView control

using System;
using System.Xml;
using System.IO;

// user defined
using TreeView.Framework.Interface;
using System.Collections;
using TreeView.Objects;

namespace TreeView.Objects.Provider
{
	/// <summary>
	/// Summary description for CompanyProvider.
	/// </summary>
	public class CompanyProvider: IProvider
	{
		private ArrayList _List;
	
	
		#region IProvider Members

		public IList GetAll(int parentID)
		{
			_List = new ArrayList();
			// create the objects
			
			XmlDocument doc = new XmlDocument();
			
			string filePath = System.AppDomain.CurrentDomain.BaseDirectory +"Data.xml";
			doc.Load( filePath  );

			XmlNodeList nodeList = doc.GetElementsByTagName( "company" );
	
			foreach ( XmlNode node in nodeList )
			{
				int ID = Convert.ToInt32(  node.Attributes[ "id" ].Value );
				string name = node.Attributes[ "name" ].Value;
				// create a new company
				Company company = new Company( ID, name );
				
				_List.Add( company );
			}

			return _List;
		}

		#endregion
	}
}