private void button1_Click(object sender, RibbonControlEventArgs e)
        {
            Excel.Workbook currentWorkBook = Globals.ThisAddIn.Application.ActiveWorkbook;
            PdfConverter   XlsxToPdfAspose = new PdfConverter();

            XlsxToPdfAspose.ConvertXlsxToPdfWithAspose(currentWorkBook.Path, currentWorkBook.Name);
        }