The C1PieChartExtender control allows the user to show customized pie charts.
C1PieChartExtender Markup
The following markup creates C1PieChartExtender control. Set the TargetControlID property to attach the extender to a control.
<cc1:C1PieChartExtender ID="Panel1_C1PieChartExtender" runat="server"
ChartLabelFormatString="" TargetControlID="Panel1">
<footer compass="South" visible="False">
</footer>
<axis>
<y compass="West" visible="False">
<labels textalign="Center">
</labels>
<gridmajor visible="True">
</gridmajor>
</y>
</axis>
</cc1:C1PieChartExtender>