Hi Melinda,
Sorry for the inconvenience caused.
We will update the documentation for Grid Importing in our next upcoming release and Until then you can refer the below documentation file.
PDF File:<
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=ExcelImportingtoGridWPF-917999224.zip >
Please let us know if you have any queries.
Thanks,
Rajasekar