openFileDialog1.InitialDirectory = "c:\";
        openFileDialog1.Filter = "pdf files (*.pdf)|*.pdf|All files (*.*)|*.*";
        openFileDialog1.FilterIndex = 2;
        openFileDialog1.RestoreDirectory = true;

        if (openFileDialog1.ShowDialog() == DialogResult.OK)
        {
            if ((fileName = openFileDialog1.FileName) != null)
            {
                startInfo = new ProcessStartInfo(fileName);

                if (File.Exists(fileName))
                {
                    i = 0;
                    foreach (String verb in startInfo.Verbs)
                    {
                        // Display the possible verbs.
                        MessageBox.Show(i.ToString() + ". " + verb);
                        i++;
                    }
                }
            }

            //Console.WriteLine("Select the index of the verb.");
            string index = "2";
            if (Convert.ToInt32(index) < i)
                verbToUse = startInfo.Verbs[Convert.ToInt32(index)];
            else
                return;

            startInfo.Verb = verbToUse;
            if (verbToUse.ToLower().IndexOf("printto") >= 0)
            {
                //Printer Name
                arguments = @"\hydfsvt02HPLaserJ";
                startInfo.Arguments = arguments;
            }

            Process newProcess = new Process();
            newProcess.StartInfo = startInfo;

            try
            {
                newProcess.Start();

                MessageBox.Show(newProcess.ProcessName + " for file " + fileName + " started successfully with verb " + startInfo.Verb);
            }
            catch (System.ComponentModel.Win32Exception ex)
            {
                MessageBox.Show(" Win32Exception caught!");
                MessageBox.Show(" Win32 error = " + ex.Message);
            }
            catch (System.InvalidOperationException)
            {
                MessageBox.Show("File " + fileName + " started with verb " + verbToUse);
            }
        }

private void startPrintingButton_Click(object sender, EventArgs e)
    {
        OpenFileDialog ofd = new OpenFileDialog();
        if (DialogResult.OK == ofd.ShowDialog(this))
        {
            PrintDocument pdoc = new PrintDocument();

            pdoc.DefaultPageSettings.PrinterSettings.PrinterName = "ZDesigner GK420d";
            pdoc.DefaultPageSettings.Landscape = true;
            pdoc.DefaultPageSettings.PaperSize.Height = 140;
            pdoc.DefaultPageSettings.PaperSize.Width = 104;

            Print(pdoc.PrinterSettings.PrinterName, ofd.FileName);
        }
    }

    private void Print(string printerName, string fileName)
    {
        try
        {
            ProcessStartInfo gsProcessInfo;
            Process gsProcess;

            gsProcessInfo = new ProcessStartInfo();
            gsProcessInfo.Verb = "PrintTo";
            gsProcessInfo.WindowStyle = ProcessWindowStyle.Hidden;
            gsProcessInfo.FileName = fileName;
            gsProcessInfo.Arguments = """ + printerName + """;
            gsProcess = Process.Start(gsProcessInfo);
            if (gsProcess.HasExited == false)
            {
                gsProcess.Kill();
            }
            gsProcess.EnableRaisingEvents = true;

            gsProcess.Close();
        }
        catch (Exception)
        {
        }
    }