【小白专用】c# 保存错误日志

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ALI.Utility
{

    public static class Log
    {
        private static object lockerForError = new object();    //错误日志锁

        /// 

        /// 保存错误日志
        /// 
        /// 
        /// 
        /// 
        public static void SaveLog(string source, string type, string error)
        {
            try
            {
                
                    lock (lockerForError)
                    {
                        string strCurPath = AppDomain.CurrentDomain.BaseDirectory.ToString();
                        string strErrorLogPath = Path.Combine(strCurPath, "ErrorLog");
                        string strErrorLogFile = Path.Combine(strErrorLogPath, DateTime.Now.ToString("yyyyMMdd") + ".log");
                        if (!Directory.Exists(strErrorLogPath))
                        {
                            Directory.CreateDirectory(strErrorLogPath);
                        }
                        FileStream fs = new FileStream(strErrorLogFile, FileMode.OpenOrCreate);
                        StreamWriter streamWriter = new StreamWriter(fs);
                        streamWriter.BaseStream.Seek(0, SeekOrigin.End);
                        streamWriter.WriteLine("[" + DateTime.Now.ToString() + "]/r/nSource : " + source + "/r/nError : [" + type + "]" + error + "/r/n");
                        streamWriter.Flush();
                        streamWriter.Close();
                        fs.Close();
                    }
                
            }
            catch (Exception exception)
            {
            }
        }
    }


}

 /// 

 /// 在log文件中写入错误日志
 /// 
 /// log文件的路径
 /// 写入的错误信息
 public static void WriteErrorLog(string path, string msg)
 {


     try
     {


         lock (lockerForError)
         {
             string strCurPath = AppDomain.CurrentDomain.BaseDirectory.ToString();
             string strErrorLogPath = Path.Combine(strCurPath, "loginLog");
             string strErrorLogFile = Path.Combine(strErrorLogPath, DateTime.Now.ToString("yyyyMMdd") + ".log");

             if (!Directory.Exists(strErrorLogPath))
             {
                 Directory.CreateDirectory(strErrorLogPath);
             }
            // FileStream fs = new FileStream(strErrorLogFile, FileMode.OpenOrCreate);

             FileStream fs = new FileStream(strErrorLogFile, FileMode.Append);

             StreamWriter sw = new StreamWriter(fs);
             string errorInfo = string.Format("时间：{0},错误信息：{1}", DateTime.Now.ToString(), msg);
             sw.WriteLine(errorInfo);
             sw.Close();
             fs.Close();

         }


     }
     catch (Exception exception)
     { 
     }


 }

 /// 

 /// 保存txt文档
 /// 
 /// 保存内容
 /// 通道
 public static void Txt(string zhi, string tongdao)
 {
     string strCurPath = AppDomain.CurrentDomain.BaseDirectory.ToString();
     string strErrorLogPath = Path.Combine(strCurPath, @"Log3\\");


     string path = strErrorLogPath;// "D:\\log\\";//日志文件路径&配置到Config文件中直接获取
     string filename = DateTime.Now.ToString("yyyy-MM-dd") + ".txt";//文件名
     string year = DateTime.Now.ToString("yyyy-MM");//年月日文件夹
     string passageway = tongdao;//通道文件夹


     //判断log文件路径是否存在，不存在则创建文件夹 
     if (!System.IO.Directory.Exists(path))
     {
         System.IO.Directory.CreateDirectory(path);//不存在就创建目录 
     }

     path += passageway + "\\";
     //判断通道文件夹是否存在，不存在则创建文件夹 
     if (!System.IO.Directory.Exists(path))
     {
         System.IO.Directory.CreateDirectory(path);//不存在就创建目录 
     }

     path += year + "\\";
     //判断年月文件夹是否存在，不存在则创建文件夹 
     if (!System.IO.Directory.Exists(path))
     {
         System.IO.Directory.CreateDirectory(path);//不存在就创建目录 
     }

     //拼接完整文件路径
     path += filename;
     if (!File.Exists(path))
     {
         //文件不存在，新建文件
         FileStream fs = new FileStream(path, FileMode.OpenOrCreate);
         StreamWriter sw = new StreamWriter(fs);
         sw.Close();
     }

     using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write))
     {
         using (StreamWriter sw = new StreamWriter(fs))
         {
             sw.BaseStream.Seek(0, SeekOrigin.End);
             sw.Write("操作时间：" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "  内容：{0}\n", zhi, DateTime.Now);
             sw.Flush();
         }
     }
 }