Steema Central

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    protected void InitializeChart()
    {
        Steema.TeeChart.Chart ch1;
        tmpChart = new System.IO.MemoryStream();
        if (Session["ch1"] == null)
        {
            ch1 = WebChart1.Chart;
            ch1.Aspect.View3D = false;
            Series1 = new Steema.TeeChart.Styles.Line(ch1);
            Series1.FillSampleValues();
            Button1.Click += new EventHandler(Button1_Click);
            ch1.Export.Template.Save(tmpChart);
            //save template to a Session variable
            Session.Add("ch1", tmpChart);
        }
        else
        {
            //retrieve the session stored Chart
            tmpChart = (System.IO.MemoryStream)Session["ch1"];
            //set the Stream position to 0 as the last read/write
            //will have moved the position to the end of the stream
            tmpChart.Position = 0;
            //import saved Chart
            WebChart1.Chart.Import.Template.Load(tmpChart);
            Button1.Click += new EventHandler(Button1_Click);
        }

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        WebChart1.AutoPostback = !WebChart1.AutoPostback;
        if (WebChart1.AutoPostback)
        {
            WebChart1.Chart.Header.Text = "Hello";
        }
        else
        {
            WebChart1.Chart.Header.Text = "Good bye";
        }
    }