iSpyApplication.Controls.VolumeLevel.GenerateFileList C# (CSharp) 메소드

        internal void GenerateFileList()
        {
            string dir = Dir.Entry + "audio\\" +Micobject.directory + "\\";
            if (!Directory.Exists(dir))
            {
                try
                {
                    Directory.CreateDirectory(dir);
                }
                catch (Exception ex)
                {
                    ErrorHandler?.Invoke(ex.Message);
                    _filelist = new List<FilesFile>();
                    FileListUpdated?.Invoke(this);
                    return;
                }
            }
            bool failed = false;
            if (File.Exists(dir + "data.xml"))
            {
                var s = new XmlSerializer(typeof(Files));
                try
                {
                    using (var fs = new FileStream(dir + "data.xml", FileMode.Open, FileAccess.Read, FileShare.Read))
                    {
                        try
                        {
                            using (TextReader reader = new StreamReader(fs))
                            {
                                fs.Position = 0;
                                lock (_lockobject)
                                {
                                    var t = ((Files)s.Deserialize(reader));
                                    if (t.File == null || !t.File.Any())
                                    {
                                        _filelist = new List<FilesFile>();
                                    }
                                    else
                                        _filelist = t.File.ToList();
                                }
                                reader.Close();
                            }
                            ScanForMissingFiles();
                        }
                        catch (Exception ex)
                        {
                            ErrorHandler?.Invoke(ex.Message);
                            failed = true;
                        }
                        fs.Close();
                    }
                }
                catch (Exception ex)
                {
                    ErrorHandler?.Invoke(ex.Message);
                    failed = true;
                }
                if (!failed)
                {
                    FileListUpdated?.Invoke(this);
                    return;
                }

            }

            //else build from directory contents

            _filelist = new List<FilesFile>();
            lock (_lockobject)
            {
                var dirinfo = new DirectoryInfo(Dir.Entry + "audio\\" + Micobject.directory + "\\");

                var lFi = new List<FileInfo>();
                lFi.AddRange(dirinfo.GetFiles());
                lFi = lFi.FindAll(f => f.Extension.ToLower() == ".mp3");
                lFi = lFi.OrderByDescending(f => f.CreationTime).ToList();

                //sanity check existing data
                foreach (FileInfo fi in lFi)
                {
                    FileInfo fi1 = fi;
                    if (_filelist.Count(p => p.Filename == fi1.Name) == 0)
                    {
                        _filelist.Add(new FilesFile
                                          {
                                              CreatedDateTicks = fi.CreationTime.Ticks,
                                              Filename = fi.Name,
                                              SizeBytes = fi.Length,
                                              MaxAlarm = 0,
                                              AlertData = "0",
                                              DurationSeconds = 0,
                                              IsTimelapse = false,
                                              IsMergeFile = fi.Name.ToLower().IndexOf("merge", StringComparison.Ordinal) != -1
                                          });
                    }
                }
                for (int index = 0; index < _filelist.Count; index++)
                {
                    FilesFile ff = _filelist[index];
                    if (lFi.All(p => p.Name != ff.Filename))
                    {
                        _filelist.Remove(ff);
                        index--;
                    }
                }
                _filelist = _filelist.OrderByDescending(p => p.CreatedDateTicks).ToList();
            }
            FileListUpdated?.Invoke(this);
        }