البته درستش اینه که اینطوری بنویسی :

Public Class Car    Inherits System.Windows.Forms.Control

Private _Items As List(Of Item) = New List(Of Item)
Public Property Items As List(Of Item)
Get
Return _Items
End Get
Set(value As List(Of Item))
_Items = value
End Set
End Property


Public Class Item
Public Property Name As String
Public Property Color As Color
End Class

End Class