Gets a MapAreasCollection object, which stores the map areas for the chart.
Assembly: System.Web.DataVisualization (in System.Web.DataVisualization.dll)
Use this property at either design time or run time to add custom map areas to the chart. Custom map areas, unlike map areas that correspond to a chart element, have a user-defined shape and coordinates.
If you render the chart as a binary stream, a special technique must be used to implement client-side image maps.