c# log function

  public static void LogInfo(string pMessage)
  {
            string Path = @"C:\\WINDOWS\system32\net.exe";//使用windows開啟網路磁碟機連線
            Process.Start(Path,@"use v: \\172.16.10.25\vip\MSS m20717 /user:tedomain\thwc74");
            //設定v槽及網路磁碟機連線帳號密碼
            string logFile = "v:\\Vip_DailyReport_Log.txt";//Debug log 檔案名稱
            if (File.Exists(logFile))
            {
                File.AppendAllText(logFile, pMessage + "\r\n");
                //如果檔案存在就繼續寫log
            }
            else
            {
                FileStream fs = new FileStream(logFile, FileMode.OpenOrCreate, FileAccess.Write);
                StreamWriter sw = new StreamWriter(fs); //檔案不存在就寫新檔           
                sw.WriteLine(pMessage);
                sw.Close();
                fs.Close();
            }
}