C# LoggingHelp 自定义记录日志帮助类

public class LoggingHelper
    {
        /// <summary>
        /// 获取文件路径
        /// </summary>
        /// <returns></returns>
        public static string GetLogFilePath()
        {
            string log_file_path = OPOConfig.GetValue("Log_File_Path");
            if (log_file_path == null)
            {
                log_file_path = AppDomain.CurrentDomain.BaseDirectory + "\\Content\\Log\\";
            }
            return log_file_path;
        }
        /// <summary>
        /// 写入日志文件
        /// </summary>
        /// <param name="logType"></param>
        /// <param name="message"></param>
        /// <param name="writeType"></param>
        /// <param name="logFileName"></param>
        public static void WriteLog(string logType, string message, int writeType = 0, string logFileName = "")
        {
            if (string.IsNullOrWhiteSpace(logFileName))
            {
                logFileName = DateTime.Now.Date.ToString("yyyyMMdd");
            }
            string strlogpath = GetLogFilePath() + "\\日志文件" + logFileName+"\\";
            if (!Directory.Exists(strlogpath))//判断文件夹是否存在
            {
                Directory.CreateDirectory(strlogpath); //创建新文件夹
            }

            try
            {
                DeleteFile(strlogpath, 30);
                DateTime now = DateTime.Now;//现在
                string fileName = string.Empty;//文件名
             
                fileName += DateTime.Today.ToString("yyyyMMdd").Replace("/", "").Replace("-", "").Replace("\\", "").Replace(" ", "").Replace(":", "").Replace("：", "") + "_" + DateTime.Now.Hour + ".log";

                string fullPath = strlogpath + fileName;
                while (IsFileInUse(fullPath))
                {
                    System.Threading.Thread.Sleep(100);
                }
                using (StreamWriter output = new StreamWriter(fullPath, true, System.Text.Encoding.UTF8))
                {
                    switch (writeType)
                    {
                        case 1:
                            output.WriteLine("\r\n");
                            output.WriteLine("-------------------开始:-" + now.ToString() + "-------------------------------");
                            output.WriteLine("类型:" + logType);
                            output.WriteLine("描述:" + message);
                            output.Close();
                            break;
                        case 2:
                            output.WriteLine("\r\n");
                            output.WriteLine("类型:" + logType);
                            output.WriteLine("描述:" + message);
                            output.Close();
                            break;
                        case 3:
                            output.WriteLine("类型:" + logType);
                            output.WriteLine("描述:" + message);
                            output.WriteLine("-------------------结束:-" + now.ToString() + "-------------------------------");
                            output.WriteLine("\r\n");
                            output.Close();

                            break;
                        default:
                            output.WriteLine("\r\n");
                            output.WriteLine("-------------------开始:-" + now.ToString() + "-------------------------------");
                            output.WriteLine("类型:" + logType);
                            output.WriteLine("描述:" + message);
                            output.WriteLine("-------------------结束:-" + now.ToString() + "-------------------------------");
                            output.Close();
                            break;
                    }
                    if (writeType == 0)
                    {

                    }
                    else
                    {

                    }

                }
            }
            catch (Exception error)
            {
                WriteLogError(error.Message);//记录日志异常
            }
        }

        private static void WriteLogError(string error)
        {
           

            string strlogpath = GetLogFilePath() + "LogError";
            string fileName = DateTime.Now.ToString("yyyy-MM-dd") + ".log";
            string fullPath = strlogpath + fileName;
            if (!Directory.Exists(fullPath))//判断文件夹是否存在
            {
                Directory.CreateDirectory(fullPath); //创建新文件夹
            }
            try
            {
                while (IsFileInUse(fullPath))
                {
                    System.Threading.Thread.Sleep(100);
                }
                DateTime now = DateTime.Now; //取现在
                using (StreamWriter output = new StreamWriter(fullPath, true, System.Text.Encoding.UTF8))
                {
                    output.WriteLine("----------------------------------------------------------------------------------");
                    output.WriteLine("Begin: " + now.ToString());
                    output.WriteLine("Type: Log Exception");
                    output.WriteLine("Description: " + error);
                    output.WriteLine("End");
                    output.Close(); //关闭
                }
            }
            catch
            {

            }
        }

        /// <summary>
        /// 文件是否被占用
        /// </summary>
        /// <param name="fileName"></param>
        /// <returns></returns>
        public static bool IsFileInUse(string fileName)
        {
            bool inUse = true;

            FileStream fs = null;
            try
            {

                fs = new FileStream(fileName, FileMode.Open, FileAccess.Read,

                FileShare.None);

                inUse = false;
            }
            catch
            {
            }
            finally
            {
                if (fs != null)

                    fs.Close();
            }
            return inUse;//true表示正在使用,false没有使用
        }

        /// <summary>
        /// 删除文件夹
        /// </summary>
        /// <param name="fileDirect"></param>
        /// <param name="saveDay"></param>
        private static void DeleteFile(string fileDirect, int saveDay)
        {
            DateTime nowTime = DateTime.Now;
            DirectoryInfo root = new DirectoryInfo(fileDirect);
            DirectoryInfo[] dics = root.GetDirectories();//获取文件夹

            FileAttributes attr = File.GetAttributes(fileDirect);
            if (attr == FileAttributes.Directory)//判断是不是文件夹
            {
                foreach (DirectoryInfo file in dics)//遍历文件夹
                {
                    TimeSpan t = nowTime - file.CreationTime;  //当前时间  减去 文件创建时间
                    int day = t.Days;
                    if (day > saveDay)   //保存的时间 ；  单位：天
                    {

                        Directory.Delete(file.FullName, true);  //删除超过时间的文件夹
                    }
                }
            }
        }
    }