cellBorderColor property Null safety

Color? cellBorderColor

The color which fills the border of every calendar cells in SfCalendar.

Defaults to null.

Using a SfCalendarTheme gives more fine-grained control over the appearance of various components of the calendar.

Widget build(BuildContext context) {
   return Container(
     child: SfCalendar(
       view: CalendarView.day,
       cellBorderColor: Colors.grey,


final Color? cellBorderColor;