'宣言 Public MustInherit Class SheetBuilder (Of TControl As Sheet, TBuilder As SheetBuilder(Of TControl,TBuilder)) Inherits C1.Web.Mvc.Fluent.BaseBuilder(Of TControl,TBuilder)
public abstract class SheetBuilder<TControl,TBuilder> : C1.Web.Mvc.Fluent.BaseBuilder<TControl,TBuilder> where TControl: Sheet where TBuilder: SheetBuilder<TControl,TBuilder>