public static void savePdfFile(String location)
        {
            //location = location.Substring(0, location.Length - 5);
            String pdfLocation = location + ".pdf";

            Excel.Range excelRange = xlWorkSheet.Range["B1", "Q" + (nextExcelRowIndex + 1)];


            excelRange.ExportAsFixedFormat(Excel.XlFixedFormatType.xlTypePDF, pdfLocation);



            xlWorkBook.Close();
            xlApp.Quit();
        }
        private bool ExportWorkbookToPdf(string workbookPath, string outputPath)
        {
            // If either required string is null or empty, stop and bail out
            if (string.IsNullOrEmpty(workbookPath) || string.IsNullOrEmpty(outputPath))
            {
                return(false);
            }

            // Create COM Objects
            Microsoft.Office.Interop.Excel.Application excelApplication;
            Microsoft.Office.Interop.Excel.Workbook    excelWorkbook;

            // Create new instance of Excel
            excelApplication = new Microsoft.Office.Interop.Excel.Application();

            // Make the process invisible to the user
            excelApplication.ScreenUpdating = false;

            // Make the process silent
            excelApplication.DisplayAlerts = false;

            // Open the workbook that you wish to export to PDF
            excelWorkbook = excelApplication.Workbooks.Open(workbookPath);

            // If the workbook failed to open, stop, clean up, and bail out
            if (excelWorkbook == null)
            {
                excelApplication.Quit();

                excelApplication = null;
                excelWorkbook    = null;

                return(false);
            }

            var exportSuccessful = true;

            try
            {
                //Call Excel's native export function (valid in Office 2007 and Office 2010, AFAIK)
                //excelWorkbook.ExportAsFixedFormat(Microsoft.Office.Interop.Excel.XlFixedFormatType.xlTypePDF, outputPath);
                Excel.Worksheet excelWorksheet = excelApplication.ActiveSheet as Excel.Worksheet;
                Excel.Range     excelRange     = excelWorksheet.Range["B1", "Q139"];
                excelRange.ExportAsFixedFormat(Excel.XlFixedFormatType.xlTypePDF, outputPath);
            }
            catch (System.Exception ex)
            {
                // Mark the export as failed for the return value...
                exportSuccessful = false;

                // Do something with any exceptions here, if you wish...
                // MessageBox.Show...
            }
            finally
            {
                // Close the workbook, quit the Excel, and clean up regardless of the results...
                excelWorkbook.Close();
                excelApplication.Quit();

                excelApplication = null;
                excelWorkbook    = null;
            }

            // You can use the following method to automatically open the PDF after export if you wish
            // Make sure that the file actually exists first...
            if (System.IO.File.Exists(outputPath))
            {
                System.Diagnostics.Process.Start(outputPath);
            }

            return(exportSuccessful);
        }