'宣言 Public MustInherit Class LayoutBaseBuilder (Of TControl As LayoutBase, TBuilder As LayoutBaseBuilder(Of TControl,TBuilder)) Inherits ServiceBuilder(Of TControl,TBuilder) Implements ITemplateBuilder(Of TBuilder)
public abstract class LayoutBaseBuilder<TControl,TBuilder> : ServiceBuilder<TControl,TBuilder>, ITemplateBuilder<TBuilder> where TControl: LayoutBase where TBuilder: LayoutBaseBuilder<TControl,TBuilder>