Writing logs in C#

Here is a simple class you can use to write error messages to a text file located in the path of the application in an error log file:

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.IO;

using System.Text;

using System.Windows.Forms;

namespace Exceptions

{

    ///

    public class ErrorLogger

    {

        // default constructor

        public ErrorLogger()

        {

        }

        // overloaded constructor

        public ErrorLogger(string msg, string stkTrace,

                  string title)

        {

            WriteToErrorLog(msg, stkTrace, title);

        }

        ///

        /// The message text

            /// to write

        /// The stack trace

            /// for the exception

        /// The name of the error

            public void WriteToErrorLog(string msg,

                  string stkTrace, string title)

        {

            // check and make the directory if necessary;

            // this is set to look in the application

            // folder, you may wish to place the error

            // log in another location depending upon the

            // the user's role and write access to different

            // areas of the file system

            if(!System.IO.Directory.Exists(

                        Application.StartupPath + "\\Errors\\"))

            {

                System.IO.Directory.CreateDirectory(

                        Application.StartupPath + "\\Errors\\");

            }

            string DateAppendage = DateTime.Now.Month.ToString() + "_" +

                        DateTime.Now.Day.ToString() + "_" +

                DateTime.Now.Year.ToString();

            // check the file, create it if necessary - do not

            // write the message in this pass,

            FileStream fs = new FileStream(Application.StartupPath +

                        "\\Errors\\errlog_" + DateAppendage + ".txt",

                        FileMode.OpenOrCreate, FileAccess.ReadWrite);

            StreamWriter s = new StreamWriter(fs);

            s.Close();

            fs.Close();

            fs.Dispose();

            // re-open the log file and log the message

            FileStream fs1 = new FileStream(Application.StartupPath +

                        "\\Errors\\errlog_" + DateAppendage + ".txt",

                        FileMode.Append, FileAccess.Write);

            StreamWriter s1 = new StreamWriter(fs1);

            s1.Write("Title: " + title + Environment.NewLine);

            s1.Write("Message: " + msg + Environment.NewLine);

            s1.Write("StackTrace: " + stkTrace + Environment.NewLine);

            s1.Write("Date/Time: " + DateTime.Now.ToString()

                        + Environment.NewLine);

                  s1.Write("==============================" +

                        Environment.NewLine);

            s1.Close();

            fs1.Close();

            fs1.Dispose();

        }

    }

}