private void chart1_PostPaint(object sender, System.Windows.Forms.DataVisualization.Charting.ChartPaintEventArgs e)
{
if (sender is ChartArea)
{
ChartArea area = (ChartArea)sender;
if (area.Name == "Default")
{
Point3D [] pt3d = new Point3D[4];
pt3d[0] = new Point3D();
pt3d[1] = new Point3D();
pt3d[2] = new Point3D();
pt3d[3] = new Point3D();
float depth = (float)area.GetSeriesDepth(chart1.Series[0]);
float zpos = (float)area.GetSeriesZPosition(chart1.Series[0]);
pt3d[0].Y = (float)area.AxisX.ValueToPosition(chart1.Series["Estimated"].Points[7].XValue);
pt3d[0].X = (float)area.AxisY.ValueToPosition(chart1.Series["Estimated"].Points[7].YValues[1]);
pt3d[0].Z = depth;
pt3d[1].Y = (float)area.AxisX.ValueToPosition(chart1.Series["Estimated"].Points[6].XValue);
pt3d[1].X = (float)area.AxisY.ValueToPosition(chart1.Series["Estimated"].Points[6].YValues[0]);
pt3d[1].Z = depth;
pt3d[2].Y = (float)area.AxisX.ValueToPosition(chart1.Series["Estimated"].Points[3].XValue);
pt3d[2].X = (float)area.AxisY.ValueToPosition(chart1.Series["Estimated"].Points[3].YValues[1]);
pt3d[2].Z = depth;
pt3d[3].Y = (float)area.AxisX.ValueToPosition(chart1.Series["Estimated"].Points[2].XValue);
pt3d[3].X = (float)area.AxisY.ValueToPosition(chart1.Series["Estimated"].Points[2].YValues[0]);
pt3d[3].Z = depth;
area.TransformPoints(pt3d);
PointF ptF1 = new PointF();
PointF ptF2 = new PointF();
PointF ptF3 = new PointF();
PointF ptF4 = new PointF();
PointF ptF5 = new PointF();
PointF ptF6 = new PointF();
ptF1 = e.ChartGraphics.GetAbsolutePoint(pt3d[0].PointF);
ptF3 = e.ChartGraphics.GetAbsolutePoint(pt3d[1].PointF);
ptF4 = e.ChartGraphics.GetAbsolutePoint(pt3d[2].PointF);
ptF6 = e.ChartGraphics.GetAbsolutePoint(pt3d[3].PointF);
ptF2.X = ptF3.X;
ptF2.Y = ptF1.Y;
ptF5.X = ptF6.X;
ptF5.Y = ptF4.Y;
// Take Graphics object from chart
Graphics graph = e.ChartGraphics.Graphics;
graph.DrawLine(new Pen(Color.Black, 1), ptF1, ptF2);
graph.DrawLine(new Pen(Color.Black, 1), ptF2, ptF3);
graph.DrawLine(new Pen(Color.Black, 1), ptF4, ptF5);
graph.DrawLine(new Pen(Color.Black, 1), ptF5, ptF6);
DrawArrow(graph, Color.Black, ptF3, ptF2, 22.5);
DrawArrow(graph, Color.Black, ptF6, ptF5, 22.5);
}
}
}