I am currently trying out SpreadProcessing. I am importing an xlsx spreadsheet file using the XlsxFormatProvider, capturing its data into a DataTable and then exporting it (without changes) to a new file (with an xlsx extension).
However, when I subsequently open the exported file in Excel, I get the following message:
We found a problem with some content in <file>. Do you want us to recover as much as we can? If you trust the source of this workbook, click Yes.
If I click Yes, the file appears to load fully and correctly (although I get a further dialog). How can I avoid this message - it's going to be a concern to users of the application I'm intending to use SpreadProcessing in.
Excel Version 2013; Visual Studio 2017; UI for ASP.NET AJAX R2 2017; .NETFramework 4.5.2