public void ResetNumberingForSection(Section sec)
{
object align = WdPageNumberAlignment.wdAlignPageNumberOutside;
object firstPage = true;
PageNumbers pageNums = sec.Headers[WdHeaderFooterIndex.wdHeaderFooterPrimary].PageNumbers;
PageNumber pgNum = pageNums.Add(ref align, ref firstPage);
pageNums.RestartNumberingAtSection = true;
pageNums.StartingNumber = 1;
pgNum.Delete();
}