C# .NET写入记事本（规范版）

指定Log文件夹下面，按照月份归类，每天一个日志，如下图：

代码如下：

        public static string getServerPath(string ServiceName)
        {
            string currentPath = AppDomain.CurrentDomain.BaseDirectory;
            currentPath = currentPath.Substring(0, currentPath.LastIndexOf("\")); //取出最后一个
            currentPath = currentPath.Substring(0, currentPath.LastIndexOf("\")); //去除最后一个
            currentPath = currentPath.Substring(0, currentPath.LastIndexOf("\")); //去除最后一个
            currentPath += "\Log";
            if (Directory.Exists(currentPath))
            {
                string strDate = DateTime.Now.ToString("yyyyMM");
                currentPath += "\" + ServiceName;
                if (Directory.Exists(currentPath))
                {
                    currentPath += "\" + strDate;
                    if (Directory.Exists(currentPath))
                    {
                        currentPath += "\" + DateTime.Now.ToString("yyyyMMdd") + ".log";
                        if (File.Exists(currentPath))
                        {
                            return currentPath;
                        }
                        else
                        {
                            FileStream fs = File.Create(currentPath);
                            fs.Flush();
                            fs.Close();
                            return currentPath;
                        }
                    }
                    else
                    {
                        Directory.CreateDirectory(currentPath);
                        currentPath += "\" + DateTime.Now.ToString("yyyyMMdd") + ".log";

                        FileStream fs = File.Create(currentPath);
                        fs.Flush();
                        fs.Close();
                        return currentPath;
                    }
                }
                else
                {
                    Directory.CreateDirectory(currentPath);
                    currentPath += "\" + strDate;
                    Directory.CreateDirectory(currentPath);
                    currentPath += "\" + DateTime.Now.ToString("yyyyMMdd") + ".log";

                    FileStream fs = File.Create(currentPath);
                    fs.Flush();
                    fs.Close();
                    return currentPath;
                }
            }
            else
            {
                return currentPath + "\WxServerLog.log";
            }
        }

使用：

string logPath_Report = getServerPath("WxService");
File.AppendAllText(logPath_Report, string.Format("【{0}】服务启动！！
", DateTime.Now));

 getServerPath("WxService")                                               //调用方法，WxService是文件夹名称