Steema Central

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public partial class _Default : System.Web.UI.Page
{
    TimeSpan timespant;
    public static System.IO.MemoryStream tmpChart;
    private static int index =-1;
    private static int counter = 1;
  //  private static int ActualSeconds, DateSeconds,seconds;
   
    private static System.Collections.ArrayList legendClickState;
  

    protected void Page_Load(object sender, EventArgs e)
    {
        Steema.TeeChart.Chart ch1;
        timespant = TimeSpan.FromSeconds(5);

        if (Session["ch1"] == null)
        {		
            ch1 = WebChart1.Chart;
            ch1.Legend.CheckBoxes = true;
            ch1.Series.Add(new Steema.TeeChart.Styles.Line());
            ch1.Series.Add(new Steema.TeeChart.Styles.Line());
            ch1.Series.Add(new Steema.TeeChart.Styles.Line());
            ch1.Series.Add(new Steema.TeeChart.Styles.Line());
            legendClickState= new System.Collections.ArrayList();
            //timer.Interval = 20;
          
            for (int i = 0; i < ch1.Series.Count; ++i)
            {
                ch1[i].FillSampleValues();
                ch1[i].XValues.DateTime = true;
                CheckedSeries chk = new CheckedSeries(WebChart1.Chart[i].Active, i,timespant);//,addr[i].ToString());
                legendClickState.Add(chk);
              
            }
            ch1.Axes.Bottom.Labels.DateTimeFormat = "MM/dd hh:mm";
            ch1.Axes.Bottom.Increment = Steema.TeeChart.Utils.GetDateTimeStep(Steema.TeeChart.DateTimeSteps.FifteenMinutes);
            ch1.Axes.Bottom.Labels.Angle = 90;
            tmpChart = new System.IO.MemoryStream();
            ch1.Legend.CheckBoxes = true;
            //export Chart to a MemoryStream template
            ch1.Export.Template.Save(tmpChart);
           // mysession = Session.SessionID;
            //save template to a Session variable
            Session.Add("ch1", tmpChart);
           //  WebChart1.ClickLegend += new Steema.TeeChart.Web.WebChart.ClickEventHandler(WebChart1_ClickLegend);     
        }
        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);
            ch1 = WebChart1.Chart;
            
            CheckLegendClick(WebChart1);
          
        }
       
    }

    private void CheckLegendClick(Steema.TeeChart.Web.WebChart wChart)
    {

        System.Drawing.Bitmap bmp = WebChart1.Chart.Bitmap((int)wChart.Width.Value, (int)wChart.Height.Value);
        index = wChart.Chart.Legend.Clicked(wChart.ClickedX, wChart.ClickedY);


        if (index != -1)
        {
            //tempspan
            if (Session["LegendClick"] == null)
            {
                Session.Add("LegendClick", legendClickState);

            }
            else
            {
                //timer.Start();
                legendClickState = CheckBoxBeforeDraw(legendClickState);
                int Seconds = DateTime.Now.Second;
              
                for (int i = 0; i < wChart.Chart.Series.Count; i++)
                {
                    if (((CheckedSeries)(legendClickState[i])).Index == index)
                    {
                       
                        CheckedSeries chk = (CheckedSeries)legendClickState[index];
                       
                        if ((Seconds - chk.TimeSpan.Seconds)>=0 && counter == 1)
                        {
                            chk.IsActive = !chk.IsActive;
                            legendClickState.RemoveAt(chk.Index);
                            legendClickState.Insert(chk.Index, chk);
                            bmp = WebChart1.Chart.Bitmap();
                            Session.Add("LegendClick", legendClickState);
                            counter++;
                        }
                        else if(counter>1)
                        {
                            counter = 1;
                        }
                       

                    }
                }
                     
            
            }
        }
    }

    private ArrayList CheckBoxBeforeDraw(ArrayList legendClickState)
    {
        legendClickState = (System.Collections.ArrayList)Session["LegendClick"];
        for (int i = 0; i < WebChart1.Chart.Series.Count; ++i)
        {
            CheckedSeries chk = (CheckedSeries)legendClickState[i];
            WebChart1.Chart[i].Active = chk.IsActive;
        }
        return legendClickState;
    }
   
    public struct CheckedSeries
    {
        public CheckedSeries(bool isActive, int index, TimeSpan timespan)
        {
            IsActive = isActive;
            Index = index;
            TimeSpan = timespan;
            
        }
        public bool IsActive;
        public int Index;
        public TimeSpan TimeSpan;
    }
}