ちょー簡単なろがークラス。

Logger.cs

using System;
using System.IO;
using System.Text;


namespace halfmoon.util {


    /// <summary>
    ///
    /// </summary>
    public static class Logger {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="e"></param>
        public static void log(Exception e) {
            DateTime now = DateTime.Now;
            StringBuilder message_builder = new StringBuilder();
            
            message_builder.AppendFormat( "- throw date: {0:o}", now ).AppendLine();

            message_builder.AppendFormat( "- helplink: \"{0}\"", e.HelpLink ).AppendLine();
            message_builder.AppendFormat( "- message: \"{0}\"", e.Message ).AppendLine();
            message_builder.AppendFormat( "- source: \"{0}\"", e.Source ).AppendLine();
            message_builder.AppendFormat( "- stack trace: \"{0}\"", e.StackTrace ).AppendLine();
            message_builder.AppendFormat( "- target site: \"{0}\"", e.TargetSite );

            innerLog( string.Format( "{0:x}.log", now.Ticks ), message_builder.ToString() );
        }


        /// <summary>
        /// 
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="write_text"></param>
        private static void innerLog(string filename, string write_text) {
            using ( StreamWriter writer = new StreamWriter( File.Open( filename,
                                                                       FileMode.OpenOrCreate
                                                                       )
                                                            )
                    ) {
                writer.WriteLine( write_text );
            }
        }
    }


}