protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
  // Instantiate a new <ChartControl>.BarsArray collection
  System.Collections.ObjectModel.ObservableCollection<ChartBars> myChartBars = chartControl.BarsArray;
 
  // Print the number of bars in each Bars object within the <ChartControl>.BarsArray collection
  foreach(ChartBars bars in myChartBars)
  {
      Print(bars.Bars.Count);
  }
}