using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace PrintPDF
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

using System;
using System.Drawing;
using System.Windows.Forms;

using Bytescout.PDFRenderer;


namespace PrintPDF
{
    public partial class Form1 : Form
    {
        private string _document = @"multipage.pdf";
        readonly RasterRenderer _rasterRenderer = null;
        private int _page = 0;


        public Form1()
        {
            InitializeComponent();

            // Create an instance of Bytescout.PDFRenderer.RasterRenderer object and register it.
            _rasterRenderer = new RasterRenderer();
            _rasterRenderer.RegistrationName = "demo";
            _rasterRenderer.RegistrationKey = "demo";
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Cursor = Cursors.WaitCursor;

            try
            {
                // Load PDF document
                _rasterRenderer.LoadDocumentFromFile(_document);
            }
            catch (Exception exception)
            {
                MessageBox.Show("Could not open PDF document.\n\n" + exception.Message);
            }
            finally
            {
                Cursor = Cursors.Default;
            }
        }

        private void buttonPageSetup_Click(object sender, EventArgs e)
        {
            // Set landscape orientation if needed
            RectangleF pageRectangle = _rasterRenderer.GetPageRectangle(0);
            if (pageRectangle.Width > pageRectangle.Height)
                pageSetupDialog1.PageSettings.Landscape = true;

            pageSetupDialog1.ShowDialog();
        }

        private void buttonPrintPreview_Click(object sender, EventArgs e)
        {
            _page = 0;
            printPreviewDialog1.Width = 800;
            printPreviewDialog1.Height = 600;
            printPreviewDialog1.ShowDialog();
        }

        private void buttonPrint_Click(object sender, EventArgs e)
        {
            if (printDialog1.ShowDialog() == DialogResult.OK)
            {
                printDocument1.Print();
            }
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            Cursor = Cursors.WaitCursor;

            try
            {
                // For the best quality set the rendering resolution equal to the printer resolution
                float renderingResolution = e.PageSettings.PrinterResolution.X;

                // Render page to image
                using (Image image = _rasterRenderer.GetImage(_page, renderingResolution))
                {
                    // Fit image into the print rectangle keeping the aspect ratio

                    Rectangle printRect = e.MarginBounds;

                    float ratio = printRect.Width / (float) image.Width;
                    int width = printRect.Width;
                    int height = (int) (image.Height * ratio);

                    if (height > printRect.Height)
                    {
                        ratio = printRect.Height / (float) image.Height;
                        width = (int) (image.Width * ratio);
                        height = printRect.Height;
                    }

                    // Draw image on device
                    e.Graphics.DrawImage(image, new Rectangle(printRect.X, printRect.Y, width, height),
                        new Rectangle(0, 0, image.Width, image.Height), GraphicsUnit.Pixel);
                }

                if (_page < _rasterRenderer.GetPageCount() - 1)
                {
                    _page++;
                    e.HasMorePages = true;
                }
            }
            catch (Exception exception)
            {
                MessageBox.Show(exception.Message);
            }
            finally
            {
                Cursor = Cursors.Default;
            }
        }
    }
}