How to access an API of underlying controls in the WinForms Viewer

The following example demonstrates how to customize controls used to visualize data within dashboard items at runtime using DashboardViewer's API.
In this example, the following options are changed:
- The font of data rows' text is changed in the underlying grid control in the DashboardItemControlUpdated event handler.
- The background color of the chart's pane is changed in the DashboardItemControlUpdated event handler.
- Values of data cells in the underlying pivot grid control are customized using the CustomCellValue event. Subscription and unsubscription to/from the CustomCellValue event are performed in the DashboardItemControlCreated and DashboardItemBeforeControlDisposed event handlers respectively.