>First I downloaded the SDK - I forget where I got it - and then I used the Nuget Package Manager to add it to the project.
>
>Then I added these lines to the Usings:
>
>

>using DocumentFormat.OpenXml.Packaging;
>using DocumentFormat.OpenXml.Spreadsheet;
>

>
>As I said I haven't done much with it. I just got it to read the spreadsheet and display some of the columns.
>What I saw looked promising.

I found the nuget package already and installed it, so I'm trying to write a simple console app now. I also found code which looked like it may work (not sure yet, but going to try)