Error Logging in C#

 using System . Text;
using System . Diagnostics;
using System . Windows . Forms;
using System . IO;



public static class Logger
    {
        public static void LogException ( Exception e )
        {
            string stringException = string . Format ( "Message     : {0}Source      : {1}StackTrace  : {2}Target Site : {3}Date & Time : {4}Computer Name : {5}" , e . Message + Environment . NewLine , e . Source + Environment . NewLine , e . StackTrace + Environment . NewLine , e . TargetSite . ToString ( ) + Environment . NewLine , DateTime . Now . ToString ( ) + Environment . NewLine , Environment . MachineName + Environment . NewLine );
            string AppExeName = Process . GetCurrentProcess ( ) . ProcessName + ".EXE";
            try
            {
                EventLog el = new EventLog ( );
                el . Source = AppExeName;
                el . WriteEntry ( stringException , EventLogEntryType . Error );
            }
            catch
            {
            }
            finally
            {
                LogException ( stringException , Application . StartupPath . ToString ( ) );
            }
        }

        private static void LogException ( string exceptionMessage , string applicationPath )
        {
            string exceptionFile = applicationPath + "\\ExceptionLog" + DateTime . Now . ToString ( "MMddyyyy" ) + ".txt";
            FileStream fsError = null;
            StreamWriter sw = null;
            try
            {
                if ( File . Exists ( exceptionFile ) )
                {
                    fsError = new FileStream ( exceptionFile , FileMode . Append , FileAccess . Write );
                    sw = new StreamWriter ( fsError );
                    sw . WriteLine ( Environment . NewLine + "------------------------------" + Environment . NewLine );
                    sw . WriteLine ( exceptionMessage );
                }
                else
                {
                    fsError = new FileStream ( exceptionFile , FileMode . Create , FileAccess . Write );
                    sw = new StreamWriter ( fsError );
                    sw . WriteLine ( exceptionMessage );
                }
                sw . Flush ( );

            }
            catch ( Exception exc )
            {
                MessageBox . Show ( exc . Message , "Error In Logging" , MessageBoxButtons . OK , MessageBoxIcon . Error );
            }
            finally
            {
                sw . Close ( );
                fsError . Close ( );
                sw . Dispose ( );
                fsError . Dispose ( );
                MessageBox . Show ( exceptionMessage + Environment . NewLine + Environment . NewLine + "Please report to the programmer any persistent error.   " , "Error Encountered" , MessageBoxButtons . OK , MessageBoxIcon . Error );
            }
        }

        public static void LogMessage ( string Message )
        {
            FileStream fsError = null;
            StreamWriter sw = null;
            string ErrorFile = Application . StartupPath + "\\MessageLog.txt";
            try
            {
                if ( File . Exists ( ErrorFile ) )
                {
                    fsError = new FileStream ( ErrorFile , FileMode . Append , FileAccess . Write );
                    sw = new StreamWriter ( fsError );
                    sw . WriteLine ( Environment . NewLine + "------------------------------" + Environment . NewLine );
                    sw . WriteLine ( Process . GetCurrentProcess ( ) . ProcessName + " : " + Message );
                }
                else
                {
                    fsError = new FileStream ( ErrorFile , FileMode . Create , FileAccess . Write );
                    sw = new StreamWriter ( fsError );
                    sw . WriteLine ( Process . GetCurrentProcess ( ) . ProcessName + " : " + Message );
                }
                sw . Flush ( );
            }
            catch ( Exception exc )
            {
                MessageBox . Show ( exc . Message , "Error In Logging" , MessageBoxButtons . OK , MessageBoxIcon . Error );
            }
            finally
            {
                sw . Close ( );
                fsError . Close ( );
                sw . Dispose ( );
                fsError . Dispose ( );
            }
        }
    }