'宣言
Public MustInherit Class _HierarchicalPlotDefinition Inherits GrapeCity.DataVisualization.Chart._BasePlotDefinition(Of IHierarchicalEncodingsDefinition) Implements IHierarchicalPlotDefinition, IPlotDefinition, IQueryInterface
public abstract class _HierarchicalPlotDefinition : GrapeCity.DataVisualization.Chart._BasePlotDefinition<IHierarchicalEncodingsDefinition>, IHierarchicalPlotDefinition, IPlotDefinition, IQueryInterface