We use Aspose.Cells to deal with lots of formattings, and we found it does not support custom format very well. Here is a bug we recently discovered.
In Excel, I have 2 cells valued 6,113 and -6,113, with custom format "#,##0.0,;(#,##0.0,)". Excel shows correctly result: 6.1 and (6.1). But when I open Excel file with Aspose, I got stringvalue as 6.1 and (6,113). I think Aspose cannot handle format on negative numbers.
I wonder if I can get a fix ASAP since it is an urgent client issue. Besides, I'd like to get both .Net 1.1 and 2.0 versions since our application supports both.
I am using Aspose.Cells 4.4.1.0 on Excel 2003. If you notice, the format string you used is different with mine. Mine has "," as suffix, which is supposed to do rounding on thousand.Somehow rounding doesn't work on negative number.
The version which I attached previously is compiled on .NET 1.x and will work fine on any platform / framework. Any how, we will provide .NET 2.0 version soon.