Sunday, October 10, 2010

How print page as PDF using iTextSharp

Example code:
using System.Windows.Forms;
using iTextSharp.text.pdf;
using iTextSharp.text;
 
namespace ActiveTest
{
    public partial class Test : Page
    {
        protected void CreatePDF(object sender, EventArgs e)
        {
            string fileName = "PrintView";
            Document doc = new Document();
            string f = Server.MapPath(string.Format("~/Temp/{0}.pdf",fileName));
            PdfWriter.GetInstance(doc, new FileStream(f, FileMode.Create));
            doc.Open();
            ///
            /// A4 Size
            ///
            int width = 585;
            int height = 842;
            string url = this.Request.Url.ToString() + "?m=Print";
            Image thumbnail = new Image(url, width, height, width, height, Image.ImageMethod.Url);
            Bitmap image = thumbnail.GenerateImage();
            string p = Server.MapPath(string.Format("~/Temp/{0}.bmp",fileName));
            image.Save(p);
            iTextSharp.text.Image i = iTextSharp.text.Image.GetInstance(p);
            doc.Add(i);
            doc.Close();
            File.Delete(p);
            ///
            /// use pdf file
            ///
            File.Delete(f);            
        }
    }
    public class Image
    {
        public enum ImageMethod { Url, Html };
        public string Url { getset; }
        public Bitmap Current { getset; }
        public int Width { getset; }
        public int Height { getset; }
        public int BrowserWidth { getset; }
        public int BrowserHeight { getset; }
        public string Html { getset; }
        public ImageMethod Method { getset; }
 
        public Image(string data, int browserWidth, int browserHeight, int width,
                                        int height, ImageMethod method)
        {
            this.Method = method;
            if (method == ImageMethod.Url)
                this.Url = data;
            else if (method == ImageMethod.Html)
                this.Html = data;
            this.BrowserWidth = browserWidth;
            this.BrowserHeight = browserHeight;
            this.Height = height;
            this.Width = width;
        }
        public Bitmap GenerateImage()
        {
            Thread thread = new Thread(new ThreadStart(GenerateThumbnailInteral));
            thread.SetApartmentState(ApartmentState.STA);
            thread.Start();
            thread.Join();
            return Current;
        }
        private void GenerateThumbnailInteral()
        {
            WebBrowser webBrowser = new WebBrowser();
            webBrowser.ScrollBarsEnabled = false;
            if (this.Method == ImageMethod.Url)
                webBrowser.Navigate(this.Url);
            else webBrowser.DocumentText = this.Html;
            webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
            while (webBrowser.ReadyState != WebBrowserReadyState.Complete) Application.DoEvents();
            webBrowser.Dispose();
        }
        private void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            WebBrowser webBrowser = (WebBrowser)sender;
            webBrowser.ClientSize = new Size(this.BrowserWidth, this.BrowserHeight);
            webBrowser.ScrollBarsEnabled = false;
            this.Current = new Bitmap(webBrowser.Bounds.Width, webBrowser.Bounds.Height);
            webBrowser.BringToFront();
            webBrowser.DrawToBitmap(Current, webBrowser.Bounds);
            this.Current = (Bitmap)Current.GetThumbnailImage(Width, Height, nullIntPtr.Zero);
        }
    }
}

References:
  1. iTextSharp - Working with images

No comments:

iPhone Launch Screen Sizes

iPhone Portrait iOS 8 Retina HT 5.5 = 1242 X 2208 Retna HD 4.7 = 750 X 1134 iPhone Landscape iOS 8 Retina HD 5.5  2208 X 1242 iPho...