关于teigha例子c#转成vb.net的一个问题

Class SR
    Inherits SelectionReactor
        Private 
[color=]Shadows[/color]
 selected As ObjectIdCollection
    Private spaceId As ObjectId
    Public Sub New(s As ObjectIdCollection, id As ObjectId)
      spaceId = id
            Selected = s
    End Sub
        'Public Overrides Function Selected(pDrawableDesc As DrawableDesc) As Boolean
        Public Overloads Function Selected(ByVal pDrawableDesc As DrawableDesc) As Boolean
            Dim pDesc As DrawableDesc = pDrawableDesc
            If pDesc.Parent IsNot Nothing Then
                ' we walk up the GS node path to the root container primitive
                ' to avoid e.g. selection of individual lines in a dimension 
                While DirectCast(pDesc.Parent, DrawableDesc).Parent IsNot Nothing
                    pDesc = DirectCast(pDesc.Parent, DrawableDesc)
                End While
                If pDesc.PersistId  IntPtr.Zero AndAlso DirectCast(pDesc.Parent, DrawableDesc).PersistId = spaceId.OldIdPtr Then
                    pDesc.MarkedToSkip = True
                    ' regen abort for selected drawable, to avoid duplicates
                    selectedc.Add(New ObjectId(pDesc.PersistId))
                End If
                Return True
            End If
            Return False
        End Function
        ' this more informative callback may be used to implement subentities selection
        Public Overrides Function Selected(ByVal pthNode As PathNode, ByVal viewInfo As Teigha.GraphicsInterface.Viewport) As SelectionReactorResult
            Return SelectionReactorResult.NotImplemented
        End Function
    End Class

shodows本来是没有的。建议我加。我加上还是不行。提示如下
错误        1        “Selected”已声明为此 class 中的“Private Shadows selected As Teigha.DatabaseServices.ObjectIdCollection”。        H:\source code\dmdraw\dmdraw\SelectionReactor.vb        114        35        dmdraw
错误        2        “Selected”已声明为此 class 中的“Private Shadows selected As Teigha.DatabaseServices.ObjectIdCollection”。        H:\source code\dmdraw\dmdraw\SelectionReactor.vb        132        35        dmdraw
有哪位熟悉两种代码的吗。应该怎么处理呢。