# Drilldown

## Content

Drilling down data to get in to the details and access lower levels in data hierarchy of Sunburst chart can be quite helpful while analysis. Sunburst chart provides **Drilldown** property to enable the functionality of drilling down and drilling back up the data at runtime.

End users can focus and drill down a data item in a Sunburst chart by simply clicking the desired slice. Whereas, to move up in the hierarchy, users simply need to right-click on a slice.

The following gif image demonstrates drilling-down by showing data points of the clicked Sunburst slice.

![Drilldown Sunburst](https://cdn.mescius.io/document-site-files/images/8ba28e07-1633-4a6a-9114-13b9f1f04eed/images/sunburst-drill.gif)

The following code showcases how to implement drill down feature in charts. This example uses the data used in the [Quick Start](/componentone/docs/wpf/online-flexchart/SunburstChart/SunburstQuickStart) topic.

```xml
<c1:C1Sunburst x:Name="sunburst" Drilldown="True" Binding="Value" BindingName="Year,Quarter,Month"
               ToolTip="{x:Null}" InnerRadius="0.2" ChildItemsPath="Items" Grid.Row="1">
    <c1:C1Sunburst.DataLabel>
        <c1:PieDataLabel Content="{}{name}" Position="Center"/>
    </c1:C1Sunburst.DataLabel>
</c1:C1Sunburst>
```

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