public override void TouchesBegan(NSSet touches, UIEvent evt) { base.TouchesBegan(touches, evt); UITouch touch = (UITouch)touches.AnyObject; CGPoint touchPoint = touch.LocationInView(chart.PlotView); TKChartSelectionInfo hitTestInfo = chart.HitTestForPoint(touchPoint); if (hitTestInfo != null) { selectedPoint = chart.VisualPointForSeries(hitTestInfo.Series, hitTestInfo.DataPointIndex); originalLocation = touchPoint; if (selectedPoint != null) { selectedPoint.Animator = null; originalPosition = selectedPoint.Center; } } }