ChartTrackBallBehavior haven't isvisible property

[Si]

It's hard to control is it show or hidden.

now i can only use remove and add form behaviors.

ShowTrackInfo and ShowIntersectionPoints can not totally control whole trackball

[Martin Ivanov]

Hello Si,

The trackball doesn't provide a property that controls its visibility. The most convenient approach to enable or disable it would be to add/remove it from the Behaviors collection of the chart control. An alternative approach would be to set the Position property of the trackball behavior to new Point(double.NaN, double.NaN). However, using this option you will need to manually set the Position on each MouseMove. Otherwise, the chart will override its value when you mouse over the chart.

Regards,
Martin Ivanov
Progress Telerik