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How to Show RadHtmlChart with Animation on a Click Event

PROBLEM

How to show RadHtmlChart with animation on a click event.

DESCRIPTION

How do I show the RadHtmlChart on a page when a user clicks a button. I want the RadHtmlChart to draw with the standard animations.

SOLUTION

The RadHtmlChart needs to be adding to the DOM during a postback to correctly register all client-side events. Initially hiding the RadHtmlChart using CSS will allow all of the client-side functions to be registered correctly. Then, the RadHtmlChart can be shown by changing the CSS Display property. Finially, the animation can be triggered by calling the redraw() event on the underlying KendoUI Chart elements that the RadHtmlChart utilizes.

Example:

Markup:

<input type="button" id="btnShowGraph" value="Show Chart" />
<div style="display: none;" id="chartHolder">
    <telerik:RadHtmlChart runat="server" ID="RadHtmlChart1" Width="640px" Height="400px">
        <ChartTitle Text="Some Distribution Chart">
            <Appearance>
                <TextStyle Color="Red" FontSize="18" FontFamily="Verdana" Margin="11" Padding="22" />
            </Appearance>
        </ChartTitle>
        <Legend>
            <Appearance Position="Bottom">
                <TextStyle FontSize="14" Color="Blue" FontFamily="Courier New, sans-serif" />
            </Appearance>
        </Legend>
        <PlotArea>
            <Series>
                <telerik:ColumnSeries Name="Some Count">
                    <Appearance>
                        <FillStyle BackgroundColor="Orange" />
                    </Appearance>
                    <LabelsAppearance Position="OutsideEnd" Color="#0000ff">
                        <TextStyle FontSize="12" />
                    </LabelsAppearance>
                    <SeriesItems>
                        <telerik:CategorySeriesItem Y="70" />
                        <telerik:CategorySeriesItem Y="30" />
                        <telerik:CategorySeriesItem Y="20" />
                        <telerik:CategorySeriesItem Y="10" />
                        <telerik:CategorySeriesItem Y="38" />
                        <telerik:CategorySeriesItem Y="43" />
                        <telerik:CategorySeriesItem Y="45" />
                        <telerik:CategorySeriesItem Y="66" />
                        <telerik:CategorySeriesItem Y="34" />
                    </SeriesItems>
                </telerik:ColumnSeries>
                <telerik:LineSeries AxisName="AdditionalAxis" Name="Some Percentage">
                    <Appearance>
                        <FillStyle BackgroundColor="Brown" />
                    </Appearance>
                    <LabelsAppearance Visible="false"></LabelsAppearance>
                    <SeriesItems>
                        <telerik:CategorySeriesItem Y="15" />
                        <telerik:CategorySeriesItem Y="23" />
                        <telerik:CategorySeriesItem Y="27" />
                        <telerik:CategorySeriesItem Y="30" />
                        <telerik:CategorySeriesItem Y="39" />
                        <telerik:CategorySeriesItem Y="45" />
                        <telerik:CategorySeriesItem Y="55" />
                        <telerik:CategorySeriesItem Y="71" />
                        <telerik:CategorySeriesItem Y="100" />
                    </SeriesItems>
                </telerik:LineSeries>
            </Series>
            <YAxis>
                <TitleAppearance Text="Some Count">
                    <TextStyle Color="Black" Bold="true" />
                </TitleAppearance>
                <LabelsAppearance>
                    <TextStyle Color="Black" />
                </LabelsAppearance>
                <MinorGridLines Visible="false" />

            </YAxis>
            <AdditionalYAxes>
                <telerik:AxisY Name="AdditionalAxis">
                    <TitleAppearance Text="Cumulative Percent of Some">
                        <TextStyle Color="Black" Bold="true" />
                    </TitleAppearance>
                    <LabelsAppearance>
                        <TextStyle Color="Black" />
                    </LabelsAppearance>
                    <MinorGridLines Visible="false" />

                </telerik:AxisY>
            </AdditionalYAxes>
            <XAxis>
                <Items>
                    <telerik:AxisItem LabelText="1" />
                    <telerik:AxisItem LabelText="2" />
                    <telerik:AxisItem LabelText="3" />
                    <telerik:AxisItem LabelText="4" />
                    <telerik:AxisItem LabelText="5" />
                    <telerik:AxisItem LabelText="6" />
                    <telerik:AxisItem LabelText="7" />
                    <telerik:AxisItem LabelText="8" />
                    <telerik:AxisItem LabelText="9+" />
                </Items>
                <AxisCrossingPoints>
                    <telerik:AxisCrossingPoint Value="0" />
                    <telerik:AxisCrossingPoint Value="9" />
                </AxisCrossingPoints>
                <LabelsAppearance>
                    <TextStyle Color="Black" FontFamily="Arial" FontSize="12" />
                </LabelsAppearance>
                <TitleAppearance Text="Some Opportunities">
                    <TextStyle Color="Black" FontFamily="Times New Roman" Bold="true" FontSize="12" />
                </TitleAppearance>
                <MinorGridLines Visible="false" />
                <MajorGridLines Visible="false" />
            </XAxis>
        </PlotArea>
    </telerik:RadHtmlChart>
</div>
<script type="text/javascript">

    $(document).ready(function () {

        $("#btnShowGraph").click(function () {



            $("#chartHolder").css("display", "block")
                .find(".RadHtmlChart").each(function (index, elem) {
                    $telerik.$(elem).data("kendoChart").redraw();
                });

        });

    });

</script>
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