Hi,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
Thank you for considering Aspose.
We only support the formulas specified/set in English (US) style. And the stored number value in the xls file is Invariant Culture; MS Excel will display the different result according to the language setting of your machine.
Please try the following codes, you will get the formula in the cell A1 is "=1,1+2" in MS Excel if the language setting is <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />France.
Workbook workbook = new Workbook();
Cells cells = workbook.Worksheets.Cells;
cells["A1"].Formula = "=1.1+2";
Thank You & Best Regards,