'宣言 Public Class C1DropDownControl Inherits C1.Win.Input.Base.C1DropDownEditorBase Implements C1.Framework.IDropDownOwner, C1.Framework.IView, C1.Win.IEmbeddedEditor, C1.Win.Input.Base.IDropDownControlBase, C1.Win.Input.Base.IDropDownEditorBase, IInputEditor