object myWordFormatDocument = Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatDocument;
object myLockd = false;
object myAddto = false;
object objReadOnly = true;
object objFalse = false;
object objTrue = true;
object reprotectPassword = "";
object myFileName = fileName;
wordDoc.Protect(WdProtectionType.wdAllowOnlyReading, ref objFalse, ref reprotectPassword, ref Missing, ref Missing);
wordDoc.SaveAs(ref myFileName, ref Missing, ref Missing, ref Missing, ref objFalse, ref Missing, ref objReadOnly,
ref Missing, ref Missing, ref Missing, ref Missing, ref Missing, ref Missing, ref Missing, ref Missing,
ref Missing);
