Logging in C#

        /// <summary>
        /// Writting a log file for Code Flow
        /// </summary>
        /// <param name="msg"> String to Log</param>
        public void LogMessageToFile(string msg)
        {
            System.IO.StreamWriter sw = System.IO.File.AppendText(FilePath);
            try
            {
                string logLine = System.String.Format("{0:G}: {1}.", System.DateTime.Now, msg);
                sw.WriteLine(logLine);
            }
            finally
            {
                sw.Close();
            }
        }