Steema Central

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public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            InitializeChart();
        }

        Steema.TeeChart.Styles.Line line1;
        Steema.TeeChart.Styles.Line line2;
        Steema.TeeChart.Styles.Line line3;

        private void InitializeChart()
        {
            chartController1.Chart = tChart1;

            line1 = new Steema.TeeChart.Styles.Line(tChart1.Chart);
            line2 = new Steema.TeeChart.Styles.Line(tChart1.Chart);
            line3 = new Steema.TeeChart.Styles.Line(tChart1.Chart);

            line1.FillSampleValues(25);
            line2.FillSampleValues(25);
            line3.FillSampleValues(25);

            line1.OutLine.Visible = true;
            line2.OutLine.Visible = true;
            line3.OutLine.Visible = true;

            line1.OutLine.Color = Color.Black;
            line2.OutLine.Color = Color.Brown;
            line3.OutLine.Color = Color.Plum;

            line1.OutLine.Width = 3;
            line2.OutLine.Width = 3;
            line3.OutLine.Width = 3;

            tChart1.Legend.Symbol.DefaultPen = false;
            tChart1.Legend.Symbol.OnSymbolDraw += new Steema.TeeChart.SymbolDrawEventHandler(Symbol_OnSymbolDraw);

            tChart1.BeforeDraw += new Steema.TeeChart.PaintChartEventHandler(tChart1_BeforeDraw);
        }

        void tChart1_BeforeDraw(object sender, Steema.TeeChart.Drawing.Graphics3D g)
        {
            tChart1.Legend.Symbol.Pen.Assign(line1.OutLine);
        }

        void Symbol_OnSymbolDraw(object sender, Steema.TeeChart.SymbolDrawEventArgs e)
        {
            int tmpIndex = tChart1.Series.IndexOf(e.Series);
            if (tmpIndex < tChart1.Series.Count - 1)
            {
                tChart1.Legend.Symbol.Pen.Assign(((Steema.TeeChart.Styles.Line)tChart1[tmpIndex + 1]).OutLine);
            }
        } 
    }