format property
final
Formats the tooltip text. By default, the tooltip will be rendered with x and y-values. You can add prefix or suffix to x, y, and series name values in the tooltip by formatting them.
Widget build(BuildContext context) {
return Container(
child: SfCartesianChart(
tooltipBehavior: TooltipBehavior(enable: true, format: '{value}%'),
));
}
Implementation
final String format