public static IExcelDataReader CreateBinaryReader(Stream fileStream, ReadOption option)
        {
            IExcelDataReader reader = new ExcelBinaryReader(option);

            reader.Open(fileStream);

            return(reader);
        }
        public static IExcelDataReader CreateReader(Stream fileStream, ExcelFileType excelFileType)
        {
            IExcelDataReader reader = null;

            switch (excelFileType)
            {
            case ExcelFileType.Binary:
                reader = new ExcelBinaryReader();
                reader.Open(fileStream);
                break;

            case ExcelFileType.OpenXml:
                reader = new ExcelOpenXmlReader();
                reader.Open(fileStream);
                break;

            default:
                break;
            }

            return(reader);
        }