ArchiveComparer2.Library.ArchiveDuplicateDetector.BuildFileList C# (CSharp) Method

        private List<FileInfo> BuildFileList(DuplicateSearchOption option)
        {
            NotifyCaller("Start building file list.", OperationStatus.BUILDING_FILE_LIST);

            List<FileInfo> fileList = new List<FileInfo>();
            Regex re = new Regex(option.FilePattern, option.FileCaseInsensitive ? RegexOptions.IgnoreCase : RegexOptions.None);

            int i = 1;
            int t = option.Paths.Count;
            foreach (var path in option.Paths)
            {
                try
                {
                    NotifyCaller("Building file list: " + path, OperationStatus.BUILDING_FILE_LIST, curr: i, total: t);
                    DirectoryInfo dirList = new DirectoryInfo(path);
                    FileInfo[] tempList = dirList.GetFiles("*", SearchOption.AllDirectories);

                    // filter based on filepattern
                    var filteredList = from f in tempList
                                       where re.IsMatch(f.Name)
                                       select f;

                    fileList.AddRange(filteredList);
                    ++i;
                }
                catch (Exception ex)
                {
                    NotifyCaller(ex.Message + " (" + path + ")", OperationStatus.ERROR);
                }
            }

            NotifyCaller("Total File: " + fileList.Count, OperationStatus.BUILDING_FILE_LIST, total: fileList.Count);

            return fileList;
        }