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Open xlsx format files


I am evaluating aspose.cells with VB.Net 2005.

(My Vista 64 installation did not work so I was sent a version of the dll by email 2 weeks ago).

The workbook.open function does not seem to have file formats "excelxlsx" as mentioned in the forum.

I only have: AsposePDf, csv, default, excel2000, excel2003, excel97, excelxp, spreadsheetML, tab delimited.

Any ideas?



Hi Mark,

Which version you are having?

Could you try the attached version, it includes FileFormatType.Excel2007Xlsx enum.

Thank you.

Thanks for the quick reply.

I am using Version

I will try the newer version

By the way, does the designer allow opening of xlsx files also?



Hi Mark,

Yes, reading / writing .xlsx files is supported.

have a good day!


We recommend you to upgrade to newer Aspose.Cells as now we have supported all the standard and advanced file formats (XLS, XLSX, XLSB, XLSM, XLT, XLTX, XLTM, XLAM, CSV, TSV, TabDelimited, TXT, HTML, etc.) of MS Excel (97 - 2003, 2007, 2010, 2013, 2016, 2019, etc.). Please see the document for supported file formats by Aspose.Cells for your complete reference

Also, see the documents in the section on loading, saving and rendering Excel spreadsheets.

You can also download the latest demos here.