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ASpose Cells : This is not a structured storage file

Hi we are using your product for our app.
When I am reading from .xls file throws Exception: This is not a structured storage file.

LoadOptions options = new LoadOptions(LoadFormat.Excel97To2003);
var excleFile = new FileStream(path, FileMode.Open);
Workbook workbook = new Workbook(excleFile, options )

Please. Could you help me?
Thanks in Advance

@Grig95,

Thanks for the sample code and details.

Please attach your template XLS file (you may zip prior attaching), we will check it soon.

Covstores.zip (5.3 KB)

@Grig95,

Thanks for the templte file.

I tested your scenario/ case a bit using your template file with Aspose.Cells for .NET v19.1 (please try it). I found no issue or exception using your sample code. It works fine. Also, I found your so called XLS file is actually an XLSX file, so you may also try to change the line of your code:
i.e.,

LoadOptions options = new LoadOptions(LoadFormat.Excel97To2003);

with:

LoadOptions options = new LoadOptions(LoadFormat.Auto);

If you still find the issue with v19.1, do let us know with details and sample code, we will check it soon.

@Amjad_Sahi Thanks a lot.

Could you say How can I check actual file type?

Thanks in advance

I’ve found it thanks a lot.

Best Regards
Grigor Vardanyan

@Grig95,

Good to know that you have sorted it out now. You may check the following document on how to detect file format for your further reference:
https://docs.aspose.com/display/cellsnet/How+to+Detect+a+File+Format+and+Check+if+the+File+is+Encrypted

Feel free to contact us any time if you need further help or have some other issue or queries, we will be happy to assist you soon.

Thanks a lot for quick response