关于word权限问题

Question

关于word权限问题if (wordApp.ActiveDocument.ProtectionType == Microsoft.Office.Interop.Word.WdProtectionType.wdNoProtection)
            {
                wordApp.ActiveDocument.Protect(Microsoft.Office.Interop.Word.WdProtectionType.wdAllowOnlyComments, ref noReset, ref password, ref useIRM, ref enforceStyleLock);
                wordApp.ActiveDocument.Protect(Microsoft.Office.Interop.Word.WdProtectionType.wdAllowOnlyFormFields, ref noReset, ref password, ref useIRM, ref enforceStyleLock);            }
为什么结果是wdAllowOnlyComments而不是wdAllowOnlyFormFields？谢谢