using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace DAL

{

    public class TXTLogHelper

    {

        /// <summary>

        /// 对某些操作进行TXT日志记录

        /// </summary>

        public static void LogBackup(string LogString)

        {

            //处理logstring,添加日期和换行

            LogString = DateTime.Now.ToString() + ":" +LogString;

            LogString += "\r\n";

            string logFolder = GetOrCreateLogFilePath();

            string logFile = GetBackupLogFileName();

            FileInfo file = new FileInfo(logFile);

            FileStream fs = file.Open(FileMode.Append, FileAccess.Write);

            byte[] bytes = Encoding.UTF8.GetBytes(LogString);

            fs.Write(bytes, , bytes.Length);

            fs.Flush();

            fs.Close();

            fs.Dispose();

        }

        //获取目录路径，如果不存在则创建

        private static string GetOrCreateLogFilePath()

        {

            string backupFolder = System.Environment.CurrentDirectory + "\\log";

            if (!Directory.Exists(backupFolder))

                Directory.CreateDirectory(backupFolder);

            return backupFolder;

        }

        private static string GetBackupLogFileName()

        {

            //为了防止数据量过大，按照日期每天生成一个日志文件

            string logFileId = DateTime.Now.ToString("yyyy-MM-dd");

            return GetOrCreateLogFilePath() + "\\" + logFileId + ".txt";

        }

    }

}

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace Utilities

{

    public class TXTLogHelper

    {

        /// <summary>

        /// 对某些操作进行TXT日志记录

        /// </summary>

        public static void LogBackup(string LogString)

        {

            string logFolder = GetOrCreateLogFilePath();

            string logFile = GetBackupLogFileName();

            FileInfo file = new FileInfo(logFile);

            FileStream fs = file.Open(FileMode.Append, FileAccess.Write);

            byte[] bytes = Encoding.UTF8.GetBytes(LogString);

            fs.Write(bytes, , bytes.Length);

            fs.Flush();

            fs.Close();

            fs.Dispose();

        }

        //获取备份目录路径，如果不存在则创建

        private static string GetOrCreateLogFilePath()

        {

            string backupFolder = System.Environment.CurrentDirectory + "\\log";

            if (!Directory.Exists(backupFolder))

                Directory.CreateDirectory(backupFolder);

            return backupFolder;

        }

        private static string GetBackupLogFileName()

        {

            //为了防止数据量过大，按照日期每天生成一个日志文件

            string logFileId = DateTime.Now.ToString("yyyy-MM-dd");

            return GetOrCreateLogFilePath() + "\\" + logFileId + ".txt";

        }

    }

}