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NullReferenceException during workbook.save("...."- FileFormatType.Html)


I attached xls + generated html (with only one generated line) + screenshots of NullReferenceException from VisualStudio which occured during execution of

_excel.Save("c:\\" + _report.Name.ToString() + ".html", FileFormatType.Html);

this exception comes from attached xls file only, another 2 xls files, which I've tried, are working fine.


Hi Peter,

Thanks for providing the template files,

We found the issue after an initial test, we will figure it out soon.

Thank you.

OK, then please let me know…

When do you expect to fix this issue pls.?



Please try the attached version. Thank you.