'Declaration Public Property DrillDown As IDrillDown
public IDrillDown DrillDown {get; set;}
Specifying an IDrillDown implementation for a DrillElemnt is optional, and if left unspecified no callback into application code occurs.
Developers are encouraged to supply an IDrillDown implementation on DrillElement to handle cases when drilling down changes chart type and/or appearance in the child chart. The callback method on this interface is invoked after the chart has changed type (to ChartType), and after data (from DataSource) has been bound to the child chart.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2