private void Print3()

        {

            const string printerName="GP-5890XIII";

            if (m_streams == null || m_streams.Count == 0)

                return;

            PrintDocument printDoc = new PrintDocument();

            printDoc.PrinterSettings.PrinterName = printerName;



            printDoc.DefaultPageSettings.Landscape = false;

           // printDoc.PrinterSettings.DefaultPageSettings.PaperSize = printDoc.PrinterSettings.PaperSizes[0];

            foreach (PaperSize ps in printDoc.PrinterSettings.PaperSizes)

            {

                string myTempID = ps.PaperName;

                if (myTempID == "Gprinter 58(48) x 299 mm")

                {

                    printDoc.PrinterSettings.DefaultPageSettings.PaperSize = ps;

                    printDoc.DefaultPageSettings.PaperSize = ps;

                }

            }

            if (!printDoc.PrinterSettings.IsValid)

            {

                string msg = string.Format("Can't find printer \"{0}\".", printerName);

               

                return;