'宣言 Public Overloads Function AddCollectionChange(Of TItem)( _ ByVal collection As ICollection(Of TItem), _ ByVal oldItem As TItem, _ ByVal newItem As TItem, _ ByVal index As Integer, _ Optional ByVal itemTypeDisplayName As String _ ) As UndoUnit
public UndoUnit AddCollectionChange<TItem>( ICollection<TItem> collection, TItem oldItem, TItem newItem, int index, string itemTypeDisplayName )