Hi Brandon,
Thank you for your interest in Syncfusion product.
The GridListControl does not have default property for sorting, it can be achieved through some workaround. Please try using the CellClick event in GridListControl to achieve this behavior. The DataView used to sorting in CellClick event.
Refer the sample in below link:
http://files.syncfusion.com/support/samples/Grid.Windows/Forums/GridList.zipPlease let me know if you have any queries.
Regards,
Lingaraj S.