雨中即景

        #region WriteLog
        public static class EventLog
        {
            public static string FilePath { get; set; }

            public static void Write(string format, params object[] arg)
            {
                Write(string.Format(format, arg));
            }

            public static void Write(string message)
            {
                if (string.IsNullOrEmpty(FilePath))
                {
                    FilePath = Directory.GetCurrentDirectory();
                }
                string filename = FilePath +
                    string.Format("\\{0:yyyy}\\{0:MM}\\{0:yyyy-MM-dd}.txt", DateTime.Now);
                FileInfo finfo = new FileInfo(filename);
                if (finfo.Directory.Exists == false)
                {
                    finfo.Directory.Create();
                }
                string writeString = string.Format("{0:執行時間：yyyy/MM/dd HH:mm:ss} {1}",
                    DateTime.Now, message) + Environment.NewLine;
                File.AppendAllText(filename, writeString, Encoding.Unicode);
            }
        }
            #endregion