Steema Central

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  private void Form1_Load(object sender, EventArgs e)
    {
      graph.Chart.Aspect.View3D = false;
      graph.Axes.Bottom.Maximum = 100;

      stopWatch = new System.Diagnostics.Stopwatch();
      graph.AfterDraw += new Steema.TeeChart.PaintChartEventHandler(graph_AfterDraw);
    }
    private System.Diagnostics.Stopwatch stopWatch;
    private void button1_Click(object sender, EventArgs e)
    {
        Random r;
        FastLine f;
        double[] x1; 
        double[] y1;

      listBox1.Items.Clear();
      graph.Series.Clear();
      stopWatch.Reset();
      stopWatch.Start();//Calculate Time;
      graph.AutoRepaint = false;
      for (int k = 0; k < 300; k++)
      {
          f = new FastLine();

          f.Color = Color.Silver;
          
          r = new Random();
          x1 = new double[1000];
          y1 = new double[1000]; 
          f.XValues.Order = ValueListOrder.Ascending;
          for (int i = 0; i < x1.Length; i++)
          {
              x1[i] = i * r.NextDouble();
              y1[i] = i;
          }
          f.XValues.Value = x1;
          f.YValues.Value = y1;
          f.XValues.Count = x1.Length;
          f.YValues.Count = y1.Length;
          listBox1.Items.Add(k);
          graph.Series.Add(f);    
      }
      graph.AutoRepaint = true;
      Application.DoEvents();
      stopWatch.Stop();//Stop calculate time.
  }

  void graph_AfterDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
  {
      //calculate elapsed time
      TimeSpan elapsedTime = stopWatch.Elapsed;
      string total = elapsedTime.TotalSeconds.ToString();
      this.Text = "Elapsed time: " + total + " s";
  }

    private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
    {
      this.graph.Chart.Series[listBox1.SelectedIndex].Color = Color.Red;
    }