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