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Version Q2 2011 released 07/12/2011
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Chart / Zooming and Scrolling

To test the Zooming and Scrolling capabilities on this demo:
  • Zoom to a portion of the chart by dragging and selecting with the mouse a rectangle to set a new scale for the chart. AJAX retrieves the visible "chunk" of the chart that was selected. You can navigate the chart by scrolling and new image "chunks" are requested on-the-fly.
  • You can also use stand-alone scrolling by explicitly setting EnableZoom="false". You can still provide XScale and YScale factor values on the server-side.


Did you know that you can add Telerik Silverlight Charts to your ASP.NET applications?

RadControls for Silverlight


  • The zooming and scrolling feature enables the user to zoom into an area of the chart so the data is shown in greater detail. For performance reasons only the visible image chunk is requested from the server-side. However, the user can scroll into view other parts of the chart data and the requested image chunks are automatically loaded via ASP.NET 2.0 callback requests on the fly.

    The user can perform the zooming / scrolling either manually or programmatically.

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="C#" AutoEventWireup="true" CodeFile="DefaultCS.aspx.cs" Inherits="Chart_Examples_NewFeatures_ZoomingScrolling_Default" %>

    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Charting" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <qsf:HeadTag ID="Headtag1" runat="server" />
    </head>
    <body class="BODY">
        <form id="form1" runat="server">
            <qsf:Header ShowSkinChooser="false" ID="Header1" runat="server" NavigationLanguage="c#" />
            <asp:ScriptManager ID="ScriptManager1" runat="server">
            </asp:ScriptManager>
            <div class="bigModule">
                <div class="bigModuleBottom">
                    <div class="title">
                        To test the Zooming and Scrolling capabilities on this demo:</div>
                    <ul>
                        <li>Zoom to a portion of the chart by dragging and selecting with the mouse a rectangle&nbsp;to
                            set a new scale for the chart. AJAX retrieves the visible "chunk" of the chart that
                            was selected. You can&nbsp;navigate the chart by scrolling and new image "chunks"
                            are requested on-the-fly.</li>
                            <li>You can also use stand-alone scrolling&nbsp;by explicitly&nbsp;setting EnableZoom="false".&nbsp;You
                                can still provide XScale and YScale factor values on the server-side.</li>
                    </ul>
                </div>
            </div>
            <div class="module">
                <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                    <ContentTemplate>
                        <telerik:RadChart ID="RadChart1" runat="Server" Width="495px" AutoLayout="true" Skin="Mac">
                            <ClientSettings ScrollMode="Both" />
                            <Series>
                                <telerik:ChartSeries DataYColumn="MyColumn" Type="Line">
                                </telerik:ChartSeries>
                            </Series>
                            <Legend Visible="false"></Legend>
                            <ChartTitle TextBlock-Text="Zooming / Scrolling (no initial scaling)">
                            </ChartTitle>
                        </telerik:RadChart>
                    </ContentTemplate>
                </asp:UpdatePanel>
                <br />
                <br />
                <asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
                    <ContentTemplate>
                        <telerik:RadChart ID="RadChart2" runat="Server" Width="495px" AutoLayout="true" Skin="Mac">
                            <ClientSettings EnableZoom="false" ScrollMode="XOnly" XScale="4" />
                            <Series>
                                <telerik:ChartSeries DataYColumn="MyColumn" Type="Line">
                                    <Appearance FillStyle-MainColor="223, 87, 60">
                                    </Appearance>
                                </telerik:ChartSeries>
                            </Series>
                            <Legend Visible="false"></Legend>
                            <ChartTitle TextBlock-Text="Scrolling only (initial XScale applied)">
                            </ChartTitle>
                        </telerik:RadChart>
                    </ContentTemplate>
                </asp:UpdatePanel>
            </div>
            <qsf:Footer runat="server" ID="Footer1" ShowCodeViewer="true" />
        </form>
    </body>
    </html>

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