C# 簡單的往txt中寫日誌,調試時很有用

using System;using System.Collections.Generic;using System.Text;using System.IO;using System.Windows.Forms;namespace Common{    public class Log    {        private string logFile;        private StreamWriter writer;        private FileStream fileStream = null;        public Log(string fileName)        {            logFile = fileName;            CreateDirectory(logFile);        }        public void log(string info)        {            try            {                System.IO.FileInfo fileInfo = new System.IO.FileInfo(logFile);                if (!fileInfo.Exists)                {                    fileStream = fileInfo.Create();                    writer = new StreamWriter(fileStream);                }                else                {                    fileStream = fileInfo.Open(FileMode.Append, FileAccess.Write);                    writer = new StreamWriter(fileStream);                }                writer.WriteLine(DateTime.Now + ": " + info);            }            finally            {                if (writer != null)                {                    writer.Close();                    writer.Dispose();                    fileStream.Close();                    fileStream.Dispose();                }            }        }        public void CreateDirectory(string infoPath)        {            DirectoryInfo directoryInfo = Directory.GetParent(infoPath);            if (!directoryInfo.Exists)            {                directoryInfo.Create();            }        }    }}

有些程式在調試時很難抓住斷點(如服務程式)，有些程式需要迴圈無數次，要看每一次或某一次的結果，等等吧！

那就來個簡單的寫日誌程式吧，txt檔案產生在debug目錄裡

原帖：http://blog.csdn.net/hejialin666/article/details/6106648