Print document from web service

public void chefOrderPrinting(OrderFromService objOrder)
        {

            try
            {

                DataTable dtOrderDetails = new DataTable();
                dtOrderDetails = objOrder.OrderDetails.ListToDataTable();
                ReportParameter[] arrParams = new ReportParameter[1];

                // string PrinterName;
                //PrinterName = ApplicationSettings.Default.ChefOrderPrint;
                arrParams[0] = new ReportParameter("rpt_TableNo", objOrder.tableName);
                ReportPrintClass objReportPrintClass;
                objReportPrintClass = new ReportPrintClass("DataSetChefWorkForService_Rpt_ChefWorkForService", dtOrderDetails, @"Report\ChefWorkForService.rdlc", arrParams, 8.27, 11.69, 0.5, 0.5, 0.2, 0.2);
                // objReportPrintClass.Print(@"Send To OneNote 2007", 1);
                
                objReportPrintClass.Print(ConfigurationSettings.AppSettings["PrinterName"], 1);
            }
            catch(Exception ex)
            {
            }

        }


 public ReportPrintClass(string _DataSourceName, DataTable _DataSourceValue, string _ReportPath, double pagewidth, double pageheight, double leftmargin, double rightmargin, double topmargin, double bottommargin)
            {
                this.pageWidth = pagewidth;
                this.pageHeight = pageheight;
                this.leftMargin = leftmargin;
                this.rightMargin = rightmargin;
                this.topMargin = topmargin;
                this.bottomMargin = bottommargin;
                LocalReport report = new LocalReport();
                report.ReportPath = _ReportPath;
                report.DataSources.Add(new ReportDataSource(_DataSourceName, _DataSourceValue));
                Export(report);
                m_currentPageIndex = 0;
            }

            public ReportPrintClass(string _DataSourceName, DataTable _DataSourceValue, string _ReportPath, ReportParameter[] arrParams, double pagewidth, double pageheight, double leftmargin, double rightmargin, double topmargin, double bottommargin)
            //{
            //  public ReportPrintClass(string _DataSourceName, List<productdetails> _DataSourceValue, string _ReportPath, ReportParameter[] arrParams, double pagewidth, double pageheight, double leftmargin, double rightmargin, double topmargin, double bottommargin)
            {
                //objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print Class");
                this.pageWidth = pagewidth;
                this.pageHeight = pageheight;
                this.leftMargin = leftmargin;
                this.rightMargin = rightmargin;
                this.topMargin = topmargin;
                this.bottomMargin = bottommargin;
                LocalReport report = new LocalReport();
                report.ReportPath = _ReportPath;

                report.DataSources.Add(new ReportDataSource(_DataSourceName, _DataSourceValue));
                report.SetParameters(arrParams);
                Export(report);
                m_currentPageIndex = 0;
            }

            // Routine to provide to the report renderer, in order to
            //    save an image for each page of the report.
            private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
            {
               // objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print create stream ");
                Stream stream = new FileStream(name +
                   "." + fileNameExtension, FileMode.Create);
                m_streams.Add(stream);
                return stream;
            }

            // Export the given report as an EMF (Enhanced Metafile) file.
            private void Export(LocalReport report)
            {
              //  objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print Export function ");
                string deviceInfo =
                  "<deviceinfo>" +
                  "  <outputformat>EMF</outputformat>" +
                  "  <pagewidth>" + pageWidth + "in</pagewidth>" +
                  "  <pageheight>" + pageHeight + "in</pageheight>" +
                  "  <margintop>" + topMargin + "in</margintop>" +
                  "  <marginleft>" + leftMargin + "in</marginleft>" +
                  "  <marginright>" + rightMargin + "in</marginright>" +
                  "  <marginbottom>" + bottomMargin + "in</marginbottom>" +
                  "</deviceinfo>";
                Warning[] warnings;
                m_streams = new List<stream>();
                try
                {
                    report.Render("Image", deviceInfo, CreateStream, out warnings);
                }
                catch (LocalProcessingException ex)
                {
                }
                foreach (Stream stream in m_streams)
                    stream.Position = 0;
            }

            // Handler for PrintPageEvents
            private void PrintPage(object sender, PrintPageEventArgs ev)
            {
              //  objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print page  function ");
                Metafile pageImage = new
                   Metafile(m_streams[m_currentPageIndex]);
                ev.Graphics.DrawImage(pageImage, ev.PageBounds);
                m_currentPageIndex++;
                ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
            }

            public void Print(string printerName, Int16 noCopy)
            {
              //  objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print page  Print Function ");
                if (m_streams == null || m_streams.Count == 0)
                    return;
                PrintDocument printDoc = new PrintDocument();
                printDoc.PrinterSettings.Copies = noCopy;
                printDoc.PrinterSettings.PrinterName = printerName;
                if (!printDoc.PrinterSettings.IsValid)
                {
                    //string msg = String.Format(
                    //   "Can't find printer \"{0}\".", printerName);
                    //MessageBox.Show(msg, "Print Error");
                    //return;
                }
                printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
                try
                {
                    printDoc.Print();
                }
                catch (Exception ex)
                {
                  //  objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print page  Print Function "+ex.Message+"  " +ex.InnerException);
                }
            }

            public void Dispose()
            {
               // objCommonClass.ErrorLog("Service :: InsertOrders()", "printing ", "reached upto Report Print page  Print Dispose ");
                {
                    foreach (Stream stream in m_streams)
                        stream.Close();
                    m_streams = null;
                }
            }

        }

    }</stream></productdetails>