private void popList1_Selected(object sender, EventArgs e)
        {
            switch (popList1.Selections[0].Text)
            {
            case "DataBind":
                DataBind();
                break;

            case "XAxis":
                this.lineChart1.XAxis.XOffset       = 1;
                this.lineChart1.XAxis.YOffset       = 1;
                this.lineChart1.XAxis.TextSize      = 10;
                this.lineChart1.XAxis.TextColor     = System.Drawing.Color.Red;
                this.lineChart1.XAxis.DrawAxisLine  = false;
                this.lineChart1.XAxis.DrawGridLines = false;
                this.lineChart1.XAxis.DrawLabels    = false;
                this.lineChart1.XAxis.GridLineWidth = 5;
                this.lineChart1.XAxis.AxisLineWidth = 5;
                this.lineChart1.XAxis.GridColor     = System.Drawing.Color.Blue;
                this.lineChart1.XAxis.AxisLineColor = System.Drawing.Color.Gray;
                this.lineChart1.XAxis.Position      = XAxisPosition.TOP;
                break;

            case "AddSet":
                this.lineChart1.Data.AddSeries(GetNewSerie(this.lineChart1.Data));
                break;

            case "RemoveSet":
                if (this.lineChart1.Data.SeriesCount > 0)
                {
                    this.lineChart1.Data.RemoveSeries(0);
                }
                break;

            case "ClearSet":
                this.lineChart1.Data.ClearValues();
                break;

            case "SetData":
                List <string> xLabels = new List <string>();
                xLabels.AddRange(new string[] { "1", "2", "3", "4" });
                LineData data = new LineData(xLabels);
                data.AddSeries(GetNewSerie(data));
                this.lineChart1.Data = data;
                break;
            }
        }