Steema Central

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zoomedState = ((Steema.TeeChart.Tools.ZoomTool)wChart.Chart.Tools[0]).SetCurrentZoom(Request, zoomedState);

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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using Steema.TeeChart.Web;
using Steema.TeeChart.Styles;
using Steema.TeeChart;

public partial class TestZoom2 : System.Web.UI.Page
{
    protected Steema.TeeChart.Web.WebChart WebChart2;
    protected Steema.TeeChart.Web.WebChart WebChart3;
    protected System.Web.UI.WebControls.Button Button2;
    protected Steema.TeeChart.Tools.ZoomTool zoomTool1;
    protected Steema.TeeChart.Styles.Points points1;
    protected Steema.TeeChart.Styles.Points points2;
    protected Steema.TeeChart.Tools.ZoomTool zoomTool2;

    protected void Page_Load(object sender, System.EventArgs e)
    {
        //         // Put user code to initialize the page here
        //         WebChart1.Chart[0].FillSampleValues(10);
        //         WebChart2.Chart[0].FillSampleValues(10);
        //         WebChart3.Chart[0].FillSampleValues(10);
        // ****************************************************
        //The data load code for WebChart1 demostrates a technique to save 
        //data between page calls. The Chart is saved as a TeeChart template 
        //to a session variable.
        // ****************************************************
        Steema.TeeChart.Chart ch1 = WebChart1.Chart;
        MemoryStream tmpChart = new MemoryStream();

        if (Session["ch1"] == null)
        {
            //setup Chart
            if (ch1.Series.Count < 2)
            {
                ch1.Series.Add(new Steema.TeeChart.Styles.Points());
                ch1.Series.Add(new Steema.TeeChart.Styles.Points());
            }
            //((Steema.TeeChart.Tools.ZoomTool)ch1.Tools[0]).ZoomPenColor=Color.Yellow;

            ((Points)ch1.Series[0]).Pointer.Pen.Visible = false;
            ((Points)ch1.Series[1]).Pointer.Pen.Color = Color.FromArgb(79, 79, 255);

            ch1.Series[0].Color = Color.FromArgb(255, 199, 26);
            ch1.Series[1].Color = Color.FromArgb(106, 106, 255);

            ch1.Series[0].FillSampleValues(36);
            ch1.Series[1].FillSampleValues(36);
            //export Chart to a MemoryStream template
            ch1.Export.Template.Save(tmpChart);
            //save template to a Session variable
            Session.Add("ch1", tmpChart);
        }
        else
        {
            //retrieve the session stored Chart
            tmpChart = (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);


            //check whether zoom request is being sent
            CheckZoom(WebChart1);
        }
    }

    private void CheckZoom(WebChart wChart)
    {
        try
        {
            ArrayList zoomedState = (ArrayList)Session[wChart.ID + "Zoomed"];
            zoomedState = ((Steema.TeeChart.Tools.ZoomTool)wChart.Chart.Tools[0]).SetCurrentZoom(Request,
               zoomedState);
            if (zoomedState == null)
                Session.Remove(wChart.ID + "Zoomed");
            else
                Session.Add(wChart.ID + "Zoomed", zoomedState);
        }
        catch (Exception e)
        {
            Response.Write(e);
        }
    }

    #region Web Form Designer generated code
    override protected void OnInit(EventArgs e)
    {
        //
        // CODEGEN: This call is required by the ASP.NET Web Form Designer.
        //
        InitializeComponent();
        base.OnInit(e);

        //         //Associate the Chart's Hotspot event with function
        //         ((Steema.TeeChart.Tools.SeriesHotspot)(WebChart1.Chart.Tools[0])).GetHTMLMap += 
        //            new Steema.TeeChart.Tools.SeriesHotspotEventHandler(hotspot1_GetHTMLMap);
        //
        //         Steema.TeeChart.Tools.SeriesHotspot h1=((Steema.TeeChart.Tools.SeriesHotspot)(WebChart1.Chart.Tools[0]));
        //         h1.MapElements="onClick=\"alert('x: ' + event.x + ' y: ' + event.y);\"";

        this.zoomTool1 = new Steema.TeeChart.Tools.ZoomTool(WebChart1.Chart);
        this.points1 = new Steema.TeeChart.Styles.Points(WebChart1.Chart);
        this.points2 = new Steema.TeeChart.Styles.Points(WebChart1.Chart);
        this.zoomTool2 = new Steema.TeeChart.Tools.ZoomTool(WebChart1.Chart);
    }

    /// 
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// 
    private void InitializeComponent()
    {

    }
    #endregion
}

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<tchart:WebChart ID="WebChart1" runat="server" AutoPostback="False" Config="AAEAAAD/////AQA...........UNoYXJ0Cw=="
            GetChartFile="GetChart.aspx" Style="position: absolute; left: 45px; top: 45px;" TempChart="Cache" Height="334px" Width="450px" />