Currently, on desktop when you enable multiselect, you get a nice checkbox in the header of the datatable. I understand why the header gets hidden on mobile, since the grid style changes. But it would ...

Added onAllRowsSelect and onAllRowsUnselect callbacks to DataTable; Add onAllRowsSelect and onAllRowsUnselect callbacks to DataTable #2093 Unfortunately, I didn't understand this problem. Done! Good ...

A selected row is typically shown in a DataTable by using a highlight background colour - however, it can also be useful to use other styling options to convey the selected state of items in a table ...