private void ReadGlobals()
		{
			_workbook = new XlsbWorkbook(
				_zipWorker.GetWorkbookStream(),
				_zipWorker.GetSharedStringsStream(),
				_zipWorker.GetStylesStream());
		}
		private void Dispose(bool disposing)
		{
			// Check to see if Dispose has already been called.
			if (!this.disposed)
			{
				if (disposing)
				{
					if (_zipWorker != null) _zipWorker.Dispose();
					if (_sheetStream != null) _sheetStream.Close();
				}

				_zipWorker = null;
				_sheetStream = null;

				_workbook = null;
				_cellsValues = null;
				_savedCellsValues = null;

				disposed = true;
			}
		}