Unable to get Chart Paint events

I want to do some custom drawing in a chart. To do this I need to access the ChartGraphics Object referenced by the PrePaint and PostPaint Chart events. Are these events working? So far I have tried subscribing to the event at multiple points in the report generation, without success. Here an example:

private void Plot_1BeforePrint(object sender, EventArgs e)
  Plot_1.Chart.PostPaint += OnPostPaint;
  Plot_1.Chart.Invalidate(); // Is supposed to repaint the chart and call PrePaint, Paint, and PostPaint events.

private void OnPostPaint(object sender, ChartPaintEventArgs e)
  Console.WriteLine("I never see this line.");
  var cg = e.ChartGraphics; // This is the thing I want!

Any help would be greatly appreciated. Thanks!

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