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  • C#写日志

    public void WriteLog(string context)

            {

                if (!string.IsNullOrEmpty(logFilePath))

                {

                    FileStream fileStream = null;

                    if (File.Exists(logFilePath))

                    {

                        fileStream = new FileStream(logFilePath, FileMode.Append, FileAccess.Write);

                    }

                    else

                    {

                        Directory.CreateDirectory(logFilePath.Substring(0, logFilePath.LastIndexOf("\")));

                        fileStream = new FileStream(logFilePath, FileMode.Create, FileAccess.Write);

                    }

                    StreamWriter writer = new StreamWriter(fileStream);

                    try

                    {

                        FileInfo fi = new FileInfo(logFilePath);

                        string fileName;

                        if (fi.Length >= 1024 * 1024 * 5)

                        {

                            fileName = fi.FullName.Substring(0, fi.FullName.Length - 4) + "." + DateTime.Now.ToString("yyyyMMddHHmmss") + Path.GetExtension(logFilePath);

                            writer.Close();

                            if (!File.Exists(fileName))

                            {

                                File.Move(logFilePath, fileName);

                                writer = File.CreateText(logFilePath);

                            }

                            else

                                writer = File.AppendText(logFilePath);

                        }

                        writer.WriteLine(string.Empty.PadLeft(20, '=') + DateTime.Now.ToString() + string.Empty.PadLeft(20, '='));

                        writer.WriteLine(context);

                        writer.Flush();

                        writer.Close();

                    }

                    finally

                    {

                        fileStream.Close();

                        writer.Close();

                    }

                }

            }

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  • 原文地址:https://www.cnblogs.com/anranstl/p/5241131.html
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