'宣言
Public MustInherit Class _RadialDataLabelView(Of TPointView As ICartesianPointView) Inherits _PointDataLabelView(Of TPointView) Implements IDataLabelModel, IDataLabelView, ILabelView, IModel, IOverlapLabelView, IPointDataLabelView, IQueryInterface, IShapeModel, IView, IViewModel
public abstract class _RadialDataLabelView<TPointView> : _PointDataLabelView<TPointView>, IDataLabelModel, IDataLabelView, ILabelView, IModel, IOverlapLabelView, IPointDataLabelView, IQueryInterface, IShapeModel, IView, IViewModel where TPointView: ICartesianPointView