'宣言 Public MustOverride ReadOnly Property Groups As TableVectorGroupCollection
'使用法 Dim instance As TableVectorCollection Dim value As TableVectorGroupCollection value = instance.Groups
public abstract TableVectorGroupCollection Groups {get;}
'宣言 Public MustOverride ReadOnly Property Groups As TableVectorGroupCollection
'使用法 Dim instance As TableVectorCollection Dim value As TableVectorGroupCollection value = instance.Groups
public abstract TableVectorGroupCollection Groups {get;}