FreeSpire.PDFViewer 4.1.0

.NET Library for Viewing and Printing PDF Files

Product Page 丨 Documentation 丨 Examples 丨 Forum 丨 Temporary License 丨 Customized Demo

Free Spire.PDFViewer for .NET is a Community Edition of the Spire.PDFViewer for .NET, which is a powerful viewer API for commercial and personal use.

By using Free Spire.PDFViewer for .NET, developers can view PDF/A-1B, PDF/X1A files and open and read encrypted PDF files.

Main Features

• Load PDF from file, stream and byte array;
• Support PDF/A-1B, PDF/X1A;
• Enable to open and read encrypted PDF files;
• Support multiple printing orientations: landscape, portrait, automatic;
• Export PDFs to Image format as .bmp, .png, .jpeg;
• Set PDF page (page down/up, zoom in/out, display as fit page).
• Locate the root of the bookmarks and switch to target bookmark;
• Support Rotation, Page layout setup and Thumbnail control;
• Locate the PDF attachments which is marked in PDF, and save them to disk;
• Four Viewing Patterns: Self-motion, Single page, Serious and Dynamic. Users can also switch over the four patterns.

Technical Features

• Microsoft .NET 2.0, .NET 3.0, .NET 3.5, .NET 4.0 supported;
• For Windows Form Only;
• ASCIIHex decode, ASCII85 decode, Flate decode, LZW decode, Run Length decode, CCITTFax decode, DCT decode, JPX decode supported;
• Developed entirely in C#, being 100% managed code;
• Totally independent .NET control library. Does NOT require Adobe Reader or any other 3rd party software/library installed on system.

Export Documents to images

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

using Spire.PdfViewer.Forms;

namespace Spire.PdfView.Demos.Export
{
    class Program
    {
        private static PdfDocumentViewer viewer = null;

        [STAThread]
        static void Main(string[] args)
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            viewer = new PdfDocumentViewer();
            viewer.LoadFromFile("PDFViewer.pdf");

            //form and child components
            Form mainForm = new Form();
            mainForm.Text = "Spire.PdfView Demo - Export";
            mainForm.Size = new System.Drawing.Size(800, 600);
            mainForm.StartPosition = FormStartPosition.CenterScreen;

            TableLayoutPanel table = new TableLayoutPanel();
            table.ColumnCount = 3;
            table.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
            table.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 20));
            table.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 50));
            table.RowCount = 2;
            table.RowStyles.Add(new RowStyle(SizeType.Percent, 100));
            table.RowStyles.Add(new RowStyle(SizeType.Absolute, 30));

            table.Controls.Add(viewer, 0, 0);
            table.SetColumnSpan(viewer, 3);
            viewer.Dock = DockStyle.Fill;

            //Export current page to one image
            Button button = new Button();
            button.Text = "Export to one image";
            button.Size = new Size(180, 24);
            button.TextAlign = ContentAlignment.MiddleCenter;
            table.Controls.Add(button, 0, 1);
            button.Dock = DockStyle.Right;
            button.Click += ExportToOneImage;

            //Export current pdf document to multiple images
            button = new Button();
            button.Text = "Export to multiple images";
            button.Size = new Size(180, 24);
            button.TextAlign = ContentAlignment.MiddleCenter;
            table.Controls.Add(button, 2, 1);
            button.Dock = DockStyle.Left;
            button.Click += ExportToMultipleImages;

            mainForm.Controls.Add(table);
            table.Dock = DockStyle.Fill;

            Application.Run(mainForm);
        }

        private static void ExportToOneImage(object sender, EventArgs e)
        {
            if (viewer.PageCount > 0)
            {
                SaveFileDialog dialog = new SaveFileDialog();
                dialog.Filter = "PNG Format(*.png)|*.png";
                if (dialog.ShowDialog() == DialogResult.OK)
                {
                    int currentPage = viewer.CurrentPageNumber;
                    Bitmap image = viewer.SaveAsImage(currentPage - 1);
                    image.Save(dialog.FileName);
                }
            }
        }

        private static void ExportToMultipleImages(object sender, EventArgs e)
        {
            if (viewer.PageCount > 0)
            {
                FolderBrowserDialog dialog = new FolderBrowserDialog();
                if (dialog.ShowDialog() == DialogResult.OK)
                {
                    int currentPage = viewer.CurrentPageNumber;
                    Bitmap[] images = viewer.SaveAsImage(0, currentPage - 1);
                    for (int i = 0; i < images.Length; i++)
                    {
                        String fileName = Path.Combine(dialog.SelectedPath, String.Format("PDFViewer-{0}.png", i));
                        images[i].Save(fileName);
                    }
                }
            }
        }
    }
}

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