borderColor property Null safety

Color? borderColor
final

Border color of the interactive tooltip.

Used to change the stroke color of the axis tooltip.

Defaults to Colors.black.

Widget build(BuildContext context) {
   return Container(
       child: SfCartesianChart(
          trackballBehavior: TrackballBehavior(enable: true,
          tooltipSettings: InteractiveTooltip(
            borderColor:Colors.white,
            borderWidth:2)),
       ));
}

Implementation

final Color? borderColor;