C# 简单日志文本输出

using System.IO;

public static void WriteLog(string strLog)

{

  string sFilePath="d:\\"+DateTime.Now.ToString("yyyyMM");

  string sFileName = "rizhi" + DateTime.Now.ToString("dd") + ".log";

  sFileName = sFilePath+ "\\"+sFileName; //文件的绝对路径

  if (!Directory.Exists(sFilePath))//验证路径是否存在

  {

    Directory.CreateDirectory(sFilePath);

    //不存在则创建

  }

  FileStream fs;

  StreamWriter sw;

  if (File.Exists(sFileName))

  //验证文件是否存在，有则追加，无则创建

  {

    fs = new FileStream(sFileName, FileMode.Append, FileAccess.Write);

  }

  else

  {

    fs = new FileStream(sFileName, FileMode.Create, FileAccess.Write);

  }

  sw = new StreamWriter(fs);

  sw.WriteLine(DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss") + "   ---   " + strLog);

  sw.Close();

  fs.Close();

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using log4net;

using log4net.Core;

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

namespace BoilerDashboard.Common

{

    public  class LogHelper

    {

        /// <summary>

        /// 输出日志到Log4Net

        /// </summary>

        /// <param name="t"></param>

        /// <param name="ex"></param>

        #region static void WriteLog(Type t, Exception ex)

        public static void WriteLog(Type t, Exception ex)

        {

            log4net.ILog log = log4net.LogManager.GetLogger(t);

            log.Error("Error", ex);

        }

        #endregion

        /// <summary>

        /// 输出日志到Log4Net

        /// </summary>

        /// <param name="t"></param>

        /// <param name="msg"></param>

        #region static void WriteLog(Type t, string msg)

        public static void WriteLog(Type t, string msg)

        {

            log4net.ILog log = log4net.LogManager.GetLogger(t);

            log.Error(msg);

        }

        #endregion

    }

}