Can Grid Control Save To Excel File

I've found several examples of how to save a grid to an Excel file. In all the C# examples there is a reference "using Syncfusion.XlsIO;". If I include this I get a compilation error related to a missing assembly reference. What DLL is this in? I'm using just the Essential Grid, does the save to EXCEL require the purchase of XLSIO as well?

Hi Brain,

What DLL is this in?
>>>>The dll is Syncfusion.Xlso.Base.dll. You must add a reference to Assembly(Syncfusion.Xlso.Base.dll) in your excel export project.

Does the save to EXCEL require the purchase of XLSIO as well?
I have forwarded the issue to our installation team. I will let you know the details once I hear back from them. Sorry for the inconvenience caused.

Thanks for your patience.
Best Regards,
Haneef