borderDrawMode property

BorderDrawMode borderDrawMode
final

Border type of stacked area series.

Defaults to BorderDrawMode.top.

Also refer BorderDrawMode

Widget build(BuildContext context) {
   return Container(
       child: SfCartesianChart(
           series: <AreaSeries<SalesData, num>>[
               AreaSeries<SalesData, num>(
                 borderDrawMode: BorderDrawMode.all,
               ),
             ],
       ));
}

Implementation

final BorderDrawMode borderDrawMode;