Errors in XML Log with C#/.NET

/*
* ErrorLogWriter class: XML error log writer
*
* Authors:		R. LOPES
* Contributors:	R. LOPES
* Created:		23 October 2002
* Modified:		24 October 2002
*
* Version:		1.0
*/

using System;
using System.IO;
using System.Xml;
using System.Text;
using System.Diagnostics;
using System.Runtime.CompilerServices;

namespace ErrorLogger.Utility{
	/// <summary>
	/// ErrorLogWriter class
	/// </summary>
	public class ErrorLogWriter:TextWriter{
		// Variables
		private bool Disposed;
		private XmlTextWriter Writer;

		// Constructor
		public ErrorLogWriter(string FilePath){
			Disposed=false;
			Writer=new XmlTextWriter(FilePath,Encoding.Unicode);

			// Write header
			Writer.Formatting=Formatting.Indented;
			Writer.WriteStartDocument();
			Writer.WriteStartElement("error");
			Writer.Flush();
			}

		// Destructor (equivalent to Finalize() without the need to call base.Finalize())
		~ErrorLogWriter(){
			Dispose(false);
			}

		// Free resources immediately
		protected override void Dispose(bool Disposing){
			if(!Disposed){
				if(Disposing){
					}
				// Close file
				Writer.Close();
				Writer=null;
				// Disposed
				Disposed=true;
				// Parent disposing
				base.Dispose(Disposing);
				}
			}

		// Close the file
		public override void Close(){
			// Write footer
			Writer.WriteEndElement();
			Writer.WriteEndDocument();
			Writer.Flush();
			// Free resources
			Dispose(true);
			GC.SuppressFinalize(this);
			}

		// Implement Encoding() method from TextWriter
		public override Encoding Encoding{
			get{
				return(Encoding.Unicode);
				}
			}

		// Implement WriteLine() method from TextWriter (remove MethodImpl attribute for single-threaded app)
		// Use stack trace and reflection to get the calling class and method
		[MethodImpl(MethodImplOptions.Synchronized)]
		public override void WriteLine(string Txt){
			Writer.WriteStartElement("event");
			Writer.WriteStartElement("time");
			Writer.WriteString(DateTime.Now.ToLongTimeString());
			Writer.WriteEndElement();
			Writer.WriteStartElement("class");
			Writer.WriteString(new StackTrace().GetFrame(2).GetMethod().ReflectedType.FullName);
			Writer.WriteEndElement();
			Writer.WriteStartElement("method");
			Writer.WriteString(new StackTrace().GetFrame(2).GetMethod().ToString());
			Writer.WriteEndElement();
			Writer.WriteStartElement("text");
			Writer.WriteString(Txt);
			Writer.WriteEndElement();
			Writer.WriteEndElement();
			Writer.Flush();
			}
		}
	}