public void InsertRange( int index, Page pages )
Public Sub InsertRange ( index As Integer, pages As Page() )
Pages does not accept a as a valid value.
PageCollection does not accept duplicate elements. Note: When a duplicate entry is found the state of the collection is undefined. (None or some entries might have been added. The status is not reverted.)
While interting existing pages to a target document, the source documents need to be open until the target document.Write is called.