'宣言 Public Class DataLabelBaseBuilder (Of TControl As DataLabelBase, TBuilder As DataLabelBaseBuilder(Of TControl,TBuilder)) Inherits BaseBuilder(Of TControl,TBuilder)
public class DataLabelBaseBuilder<TControl,TBuilder> : BaseBuilder<TControl,TBuilder> where TControl: DataLabelBase where TBuilder: DataLabelBaseBuilder<TControl,TBuilder>