C＃将xlsm转换为pdf

Question

我正在尝试使用[Microsoft.Office.Interop.Excel] dll将excel（xxx.xlsm）转换为pdf。转换excel用户表单时显示，无法继续转换过程...

想要从c＃代码中禁用宏用户表单。需要指导...

尝试 {

application = new Application（）;

            /*
             * application.Workbooks.Open(...は、Workbooksオブジェクトの解放処理ができないので不可。
             * 必ず変数経由でComRelease.FinalReleaseComObjectsを呼び出すこと。
             */
            workbooks = application.Workbooks;

            workbook = workbooks.Open(
                excelFilePathName, Type.Missing, Type.Missing, Type.Missing, Type.Missing
                , Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing
                , Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
            application.AutomationSecurity = Microsoft.Office.Core.MsoAutomationSecurity.msoAutomationSecurityForceDisable;


            // http://msdn.microsoft.com/ja-jp/library/microsoft.office.tools.excel.workbook.exportasfixedformat(v=vs.90).aspx
            workbook.ExportAsFixedFormat(
                XlFixedFormatType.xlTypePDF,
                saveAsPathName,
                XlFixedFormatQuality.xlQualityStandard,
                true,
                true,
                Type.Missing,
                Type.Missing,
                false,
                Type.Missing);
        }

预先感谢