Steema Central

Code: Select all

private void Form1_Load(object sender, System.EventArgs e) { 
        tChart1.Aspect.View3D = false; 
        line1.FillSampleValues(20); 
} 
 
private void tChart1_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g) { 
        if(tChart1.Series.Count > 0){ 
            if(tChart1.Series[0].Count > 10) { 
                Series s = tChart1.Series[0]; 
                int h = Convert.ToInt32(g.TextHeight("H")); 
                Point p1 = new Point(s.CalcXPos(3), s.CalcYPos(3)); 
                Point p2 = new Point(s.CalcXPos(10), s.CalcYPos(10)); 
                g.Pen.Color = Color.Blue; 
                g.Pen.Width = 2; 
                g.Pen.Style = System.Drawing.Drawing2D.DashStyle.Dash; 
                g.MoveTo(p1); 
                g.LineTo(p2, 0); 
                g.TextOut(p1.X, p1.Y - h, "Point value: " + s.YValues[3].ToString()); 
                g.TextOut(p2.X, p2.Y, "Point value: " + s.YValues[10].ToString()); 
                g.TextOut(p2.X, p2.Y + h, "Change is: " + Convert.ToString(s.YValues[3] - s.YValues[10])); 
            } 
        } 
}