Item Labels in a Stacked Bar Chart

[Paul Smith]

Is it possible (and if so how) to only show the total of the bar as the label above it, on a stacked bar chart.
If I turn on item labels, it puts a label for each stack segment, where as I want just the total of all segments to display above the bar.

[Ves]

Hi Paul,

You can hide the labels for all the series, except for the last one. For it, you can use the #STSUM token to display the stacked sum. Here is an example:

<telerik:RadChart runat="server" ID="RadChart1" AutoLayout="True" >
           <Series>
               <telerik:ChartSeries Name="Series 1" Type="StackedBar">
                   <Appearance>
                       <LabelAppearance Visible="False">
                       </LabelAppearance>
                   </Appearance>
                   <Items>
                       <telerik:ChartSeriesItem Name="Item 1" YValue="3">
                       </telerik:ChartSeriesItem>
                       <telerik:ChartSeriesItem Name="Item 2" YValue="2">
                       </telerik:ChartSeriesItem>
                   </Items>
               </telerik:ChartSeries>
               <telerik:ChartSeries Name="Series 2" Type="StackedBar">
                   <Appearance>
                       <LabelAppearance Visible="False">
                       </LabelAppearance>
                   </Appearance>
                   <Items>
                       <telerik:ChartSeriesItem Name="Item 1" YValue="3">
                       </telerik:ChartSeriesItem>
                       <telerik:ChartSeriesItem Name="Item 2" YValue="1">
                       </telerik:ChartSeriesItem>
                   </Items>
               </telerik:ChartSeries>
               <telerik:ChartSeries DefaultLabelValue="#STSUM" Name="Series 3"
                   Type="StackedBar">
                   <Items>
                       <telerik:ChartSeriesItem Name="Item 1" YValue="4">
                       </telerik:ChartSeriesItem>
                       <telerik:ChartSeriesItem Name="Item 2" YValue="5">
                       </telerik:ChartSeriesItem>
                   </Items>
               </telerik:ChartSeries>
           </Series>
       </telerik:RadChart>

You can find more details about the available tokens in this help topic.

Kind regards,
Ves
the Telerik team

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[Paul Smith]

Thank you! Much appreciated.

[Travis]

What would be the syntax for this if you were binding to a database?

[Ves]

Hi Travis,

The syntax would be the same. However, when databinding, it is possible that you have no ChartSeries before the databinding occurs. In this case, you can wire the DataBound event of RadChart and update the ChartSeries there.

Best regards,
Ves
the Telerik team

[Travis]

Thank you.  That would expalin my problem.  I ended up using the tooltip control and setting #STSUM on the ItemDataBound event of the chart.