protected void LoadFileList(string dir)
        {
            //загружаем файлы из дериктории
            string[] filePaths = Directory.GetFiles(dir, "*.txt");
            int      i;

            flag_record = false;
            vrecords.Clear();
            for (i = 0; i < filePaths.Length; i++)
            {
                ClassRecord local_rec = new ClassRecord();
                if (local_rec.ValidateReadHead(filePaths[i]) || local_rec.ValidateReadHeadWindows7(filePaths[i]))
                {
                    vrecords.Add(local_rec);
                }
            }
        }