Hi Adrain,
Thank you for using Essential PDF.
It is not possible to pass a list as datasource for the PdfGrid.The datasource for a PdfGrid can be an array (two-dimensional, one-dimensional or nested), a DataTable, DataColumn, DataView or DataSet.
Please refer to the documentation in the link below, for more details.
Documentation:
http://help.syncfusion.com/ug_82/Reporting_PDF/GridCreation.htmlLet us know if you have any questions.
Regards,
Pravin.