As I understand it:
all numerical data in an excel worksheet is stored as an IEEE double.
Maximum precision of approxmately 15 digits.

--
Regards,
Tom Ogilvy

"Mario Reiley" wrote in message
...
Hi group

I am porting several Excel files to Winforms C# .NET application. but I
having problems with some calc with lost precition.

so How can I find the internal representation in memory of the Excel data
types. i.e , When I put a number (INteger, float,Decimal.....) in cells.

Best Regard
Mario