protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
  // Use BarsArray[0] to pass in a ChartBars object representing the primary Bars object on the chart
  double barPixelWidth = chartControl.GetBarPaintWidth(chartControl.BarsArray[0]);
 
  // Print the pixel width of bars painted on the chart
  Print(String.Format("Bars on the chart are {0} pixels wide", barPixelWidth));  
}