private void changeChartsVisible(int chartMode, bool visible) { if (bars != null && bars.Children != null) { foreach (BarChart chart in bars.Children) { if (chart != null) { chart.setBarVisible(chartMode, visible); } } } SpeedChart.setLineVisible(chartMode, visible); OffsetChart.setLineVisible(chartMode, visible); AccelerationChart.setLineVisible(chartMode, visible); BrakeChart.setLineVisible(chartMode, visible); FollowChart.setLineVisible(chartMode, visible); }