创建txt格式文本日志

公共方法（可以将其放到类库里边）：

   #region 记录日志
     #region 写日志
     /// <summary>
     /// 写日志
     /// </summary>
     /// <param name="FilePath">日志文件路径</param>
     /// <param name="type">文件分类</param>
     /// <param name="LogTime">记录时间</param>
     /// <param name="Content">日志内容</param>
     public static void WriteLog(string FilePath, string fileName, DateTime LogTime, string Content)
     {
         string FileName = CreateLogFilePath(FilePath, fileName, LogTime);
         StreamWriter sw;
         if (!Directory.Exists(Path.GetDirectoryName(FileName)))
             Directory.CreateDirectory(Path.GetDirectoryName(FileName));
         if (!File.Exists(FileName))
         {
             sw = File.CreateText(FileName);
         }
         else
         {
             sw = File.AppendText(FileName);
         }
         sw.WriteLine(DateTime.Now.ToString() + " " + Content);
         sw.Close();
     }
     #endregion

     #region 创建日志文件路径及文件名
     /// <summary>
     /// 创建日志文件路径及文件名
     /// </summary>
     /// <param name="FilePath">文件路径</param>
     /// <param name="LogTime">记录时间</param>
     /// <returns>日志完整路径及文件名</returns>
     public static string CreateLogFilePath(string FilePath, string fileName, DateTime LogTime)
     {
         FilePath += "\\" + LogTime.Year + LogTime.Month.ToString().PadLeft(, '') + "\\" + LogTime.ToShortDateString() + "\\";
         string FileName = FilePath + fileName + ".txt";
         return FileName;
     }
     #endregion
     #endregion

调用示例：

   string logdes="这里可以定义你要记录日志的内容";
 WriteLog("D:\\CreateOrderId", "sys", DateTime.Now, logdes);
 //sys为记录日志的类型可以随便定义