foreach my $sheet (0 .. $sheets - 1) {
  $eSheet = $eBook->{Worksheet}[$sheet];
  $sheetName = $eSheet->{Name};
  #print "#Worksheet $sheet: $sheetName\n";
  next unless (exists ($eSheet->{MaxRow}) and (exists ($eSheet->{MaxCol})));
  foreach my $row ($eSheet->{MinRow} .. $eSheet->{MaxRow}) {
    foreach my $column ($eSheet->{MinCol} .. $eSheet->{MaxCol}) {
        
      my $cell = $eSheet->{Cells}[$row][$column];
      if (defined $cell){
        if (defined $cell->{Type} && $cell->{Type} eq 'Date'){
          print ExcelFmt($datefmt, $cell->unformatted() ) . ",";
        } else {
          print $cell->value() . ",";
        }
      } else {
        print ",";
      } 
    }
    print "\n";
  }
}