'宣言 Public MustInherit Class VisitedDocumentStorage
'使用法 Dim instance As VisitedDocumentStorage
public abstract class VisitedDocumentStorage
'宣言 Public MustInherit Class VisitedDocumentStorage
'使用法 Dim instance As VisitedDocumentStorage
public abstract class VisitedDocumentStorage
System.Object
C1.Win.C1Preview.VisitedDocumentStorage