I create simple test PDF document using iTextSharp. I'm just using PdfContentByte to show some text. This is the code:
Document document = new Document();
Stream outStream = new FileStream("D:\\aaa\\test.pdf", FileMode.OpenOrCreate);
PdfWriter writer = PdfWriter.GetInstance(document, outStream);
document.Open();
PdfContentByte to = writer.DirectContent;
to.BeginText();
to.SetFontAndSize(BaseFont.CreateFont(), 12);
to.SetTextMatrix(0, 0);
to.ShowText("aaa");
to.EndText();
document.Close();
outStream.Close();
The file is created but when I try to open it(using Acrobat Reader), all I get is following message:
There was an error opening this
document. There was a problem reading
this document (14).
Where is the problem ? How do I fix it? Thank you
Problem was solved after restarting VS. No code change was made.
I can't seem to replicate the problem you're encountering, but please take into account potential leaks of resources due to any exceptional conditions you may encounter and properly Dispose() those objects as such:
using (Stream outStream = new FileStream("D:\\aaa\\test.pdf", FileMode.OpenOrCreate))
{
Document document = new Document();
PdfWriter writer = PdfWriter.GetInstance(document, outStream);
document.Open();
try
{
PdfContentByte to = writer.DirectContent;
to.BeginText();
try
{
to.SetFontAndSize(BaseFont.CreateFont(), 12);
to.SetTextMatrix(0, 0);
to.ShowText("aaa");
}
finally
{
to.EndText();
}
}
finally
{
document.Close();
}
}
Related
I'm trying to convert some HTML code into PDF file using iTextSharp. And It's working with one problem. I have some ordered lists and they are displaying but without bullets/numbers (I tested both OL and UL) and I can't figure out how to do this without manually parsing HTML code and inserting numbers at the beginning of each li element.
_topic.Body = "<ol><li>First</li><li>Second</li></ol>";
using (FileStream msOutput = new FileStream("file.pdf", FileMode.Create))
{
TextReader reader = new StringReader(_topic.Body);
Document document = new Document(PageSize.A4, 30, 30, 30, 30);
PdfWriter writer = PdfWriter.GetInstance(document, msOutput);
HTMLWorker worker = new HTMLWorker(document);
document.Open();
worker.StartDocument();
worker.Parse(reader);
worker.EndDocument();
worker.Close();
document.Close();
}
I am using Visual Studio 2013, c# Windows Application, iTextSharp:
I can easily create/save a pdf file and write to it but is there a way to just use a pdf file and write to it without first saving it? I don't want to be creating a temporary pdf file every-time someone runs a report. Thanks in Advance !!
Document doc = new Document(iTextSharp.text.PageSize.LETTER, 10,10,42,35);
PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream("Test.pdf",
FileMode.Create));
doc.Open();
\\\\ Then I do a bunch of stuff, then do a close
doc.Close();
You can use a MemoryMappedFile and write to it and it is not disk based.
using (MemoryMappedFile mmf = MemoryMappedFile.CreateNew("INMEMORYPDF.pdf", 1000000))
{
PDFPageMargins margins = new PDFPageMargins(10, 10, 10, 10);
var document = new Document((_pageWidth > 540) ? PageSize.A4.Rotate() : PageSize.A4, margins.Left, margins.Right, margins.Top, margins.Bottom);
using (MemoryMappedViewStream stream = mmf.CreateViewStream())
{
PdfWriter.GetInstance(document, stream);
document.Open();
//MODIFY DOCUMENT
document.Close();
}
byte[] content;
using (MemoryMappedViewStream stream = mmf.CreateViewStream())
{
BinaryReader rdr = new BinaryReader(stream);
content = new byte[mmf.CreateViewStream().Length];
rdr.Read(content, 0, (int)mmf.CreateViewStream().Length);
}
return content;
}
I need to set the zoom level 75% to pdf file using iTextSharp. I am using following code to set the zoom level.
PdfReader reader = new PdfReader("input.pdf".ToString());
iTextSharp.text.Document doc = new iTextSharp.text.Document(reader.GetPageSize(1));
doc.OpenDocument();
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream("Zoom.pdf", FileMode.Create));
PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, doc.PageSize.Height, 0.75f);
doc.Open();
PdfAction action = PdfAction.GotoLocalPage(1, pdfDest, writer);
writer.SetOpenAction(action);
doc.Close();
But I am getting the error "the page 1 was request but the document has only 0 pages" in the doc.Close();
You need to use PdfStamper (as indicated by mkl) instead of PdfWriter (as made clear by Chris Haas). Please take a look at the AddOpenAction example:
public void manipulatePdf(String src, String dest) throws IOException, DocumentException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, reader.getPageSize(1).getHeight(), 0.75f);
PdfAction action = PdfAction.gotoLocalPage(1, pdfDest, stamper.getWriter());
stamper.getWriter().setOpenAction(action);
stamper.close();
reader.close();
}
The result is a PDF that opens with a zoom factor of 75%.
I have used iText for some various utility, such us merge and editing of pdf files with success. Now I need to overlap 2 pdf pages:
For Instance:
INPUT:
PDF#1 (1 Page)
PDF#2 (1 Page)
OUTPUT:
PDF#3 (1 Page: This is the result of the 2 Input Pages Overlapped)
I don't know if it's possible to do this with iText latest version. I am also considering to use one of the 2 input PDF Files as background for the PDF Output Files.
Thank you in advance.
It's actually pretty easy to do. The PdfWriter object has an instance method called GetImportedPage() which returns a PdfImportedPage object. This object can be passed to a PdfContentByte's AddTemplate() method.
GetImportedPage() takes a PdfReader object and the page number that you want to get. You can get a PdfContentByte from an instance of a PdfWriter's DirectContent property.
The code below is a full working C# 2010 WinForms app targeting iTextSharp 5.1.2.0 that shows this all off. It first creates two files on the desktop, the first with just a solid red background color and the second with just a paragraph. It then combines those two files overlapping into a third document. See the code for additional comments.
using System;
using System.IO;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace WindowsFormsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) {
//Folder that we'll work from
string workingFolder = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string pdf1 = Path.Combine(workingFolder, "pdf1.pdf");//PDF with solid red background color
string pdf2 = Path.Combine(workingFolder, "pdf2.pdf");//PDF with text
string pdf3 = Path.Combine(workingFolder, "pdf3.pdf");//Merged PDF
//Create a basic PDF filled with red, nothing special
using (FileStream fs = new FileStream(pdf1, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (Document doc = new Document(PageSize.LETTER)) {
using (PdfWriter writer = PdfWriter.GetInstance(doc, fs)) {
doc.Open();
PdfContentByte cb = writer.DirectContent;
cb.SetColorFill(BaseColor.RED);
cb.Rectangle(0, 0, doc.PageSize.Width, doc.PageSize.Height);
cb.Fill();
doc.Close();
}
}
}
//Create a basic PDF with a single line of text, nothing special
using (FileStream fs = new FileStream(pdf2, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (Document doc = new Document(PageSize.LETTER)) {
using (PdfWriter writer = PdfWriter.GetInstance(doc, fs)) {
doc.Open();
doc.Add(new Paragraph("This is a test"));
doc.Close();
}
}
}
//Create a basic PDF
using (FileStream fs = new FileStream(pdf3, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (Document doc = new Document(PageSize.LETTER)) {
using (PdfWriter writer = PdfWriter.GetInstance(doc, fs)) {
doc.Open();
//Get page 1 of the first file
PdfImportedPage imp1 = writer.GetImportedPage(new PdfReader(pdf1), 1);
//Get page 2 of the second file
PdfImportedPage imp2 = writer.GetImportedPage(new PdfReader(pdf2), 1);
//Add the first file to coordinates 0,0
writer.DirectContent.AddTemplate(imp1, 0, 0);
//Since we don't call NewPage the next call will operate on the same page
writer.DirectContent.AddTemplate(imp2, 0, 0);
doc.Close();
}
}
}
this.Close();
}
}
}
Hi I have succesfully used a HTMLWorker to convert a gridview using asp.NET / C#.
(1) I have applied some limited style to the resulting table but cannot see how to apply tablestyle for instance grid lines or apply other formatting style such as a large column width for example for a particular column.
(2) I would actually like to put this text onto a pre-existing template which contains a logo etc. I've used PDF Stamper before for this but cannot see how I can use both PDFStamper and HTMLWorker at once. HTMLWorker needs a Document which implements iDocListener ... but that doesnt seem compatible with usign a PDFStamper. I guess what I am looking for is a way to create a PDFStamper, write title etc, then add the parsed HTML from the grid. The other problem is that the parsed content doesnt interact with the other stuff on the page. For instance below I add a title chunk to the page. Rather than starting below it, the parsed HTML writes over the top. How do I place / interact the parsed HTML content with the rest of what is on the PDF document ?
Thanks in advance
Rob
Here';s the code I have already
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 30f, 0f);
HTMLWorker htmlWorker = new HTMLWorker(pdfDoc);
StyleSheet styles = new StyleSheet();
styles.LoadTagStyle("th", "size", "12px");
styles.LoadTagStyle("th", "face", "helvetica");
styles.LoadTagStyle("span", "size", "10px");
styles.LoadTagStyle("span", "face", "helvetica");
styles.LoadTagStyle("td", "size", "10px");
styles.LoadTagStyle("td", "face", "helvetica");
htmlWorker.SetStyleSheet(styles);
PdfWriter.GetInstance(pdfDoc, HttpContext.Current.Response.OutputStream);
pdfDoc.Open();
//Title - but this gets obsured by data, doesnt move it down
Font font = new Font(Font.FontFamily.HELVETICA, 14, Font.BOLD);
Chunk chunk = new Chunk(title, font);
pdfDoc.Add(chunk);
//Body
htmlWorker.Parse(sr);
Let me first give you a couple of links to look over when you get a chance:
ItextSharp support for HTML and CSS
How to apply font properties on while passing html to pdf using itextsharp
These answers go deeper into what's going on and I recommend reading them when you get a chance. Specifically the second one will show you why you need to use pt instead of px.
To answer your first question let me show you a different way to use the HTMLWorker class. This class has a static method on it called ParseToList that will convert HTML to a List<IElement>. The objects in that list are all iTextSharp specific versions of your HTML. Normally you would do a foreach on those and just add them to a document but you can modify them before adding which is what you want to do. Below is code that takes a static string and does that:
string file1 = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "File1.pdf");
using (FileStream fs = new FileStream(file1, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (Document doc = new Document(PageSize.LETTER))
{
using (PdfWriter writer = PdfWriter.GetInstance(doc, fs))
{
doc.Open();
//Our HTML
string html = "<table><tr><th>First Name</th><th>Last Name</th></tr><tr><td>Chris</td><td>Haas</td></tr></table>";
//ParseToList requires a StreamReader instead of just a string so just wrap it
using (StringReader sr = new StringReader(html))
{
//Create a style sheet
StyleSheet styles = new StyleSheet();
//...styles omitted for brevity
//Convert our HTML to iTextSharp elements
List<IElement> elements = iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(sr, styles);
//Loop through each element (in this case there's actually just one PdfPTable)
foreach (IElement el in elements)
{
//If the element is a PdfPTable
if (el is PdfPTable)
{
//Cast it
PdfPTable tt = (PdfPTable)el;
//Change the widths, these are relative width by the way
tt.SetWidths(new float[] { 75, 25 });
}
//Add the element to the document
doc.Add(el);
}
}
doc.Close();
}
}
}
Hopefully you can see that once you get access to the raw PdfPTable you can tweak it as necessary.
To answer your second question, if you want to use the normal Paragraph and Chunk objects with a PdfStamper then you need to use a PdfContentByte object. You can get this from your stamper in one of two ways, either by asking for one that sits "above" existing content, stamper.GetOverContent(int) or one that sits "below" existing content, stamper.GetUnderContent(int). Both versions take a single parameter saying what page to work with. Once you have a PdfContentByte you can create a ColumnText object bound to it and use this object's AddElement() method to add your normal elements. Before doing this (and this answers your third question), you'll want to create at least one "column". When I do this I generally create one that essentially covers the entire page. (This part might sound weird but we're essentially make a single row, single column table cell to add our objects to.)
Below is a full working C# 2010 WinForms app targeting iTextSharp 5.1.1.0 that shows off everything above. First it creates a generic PDF on the desktop. Then it creates a second document based off of the first, adds a paragraph and then some HTML. See the comments in the code for any questions.
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.html.simpleparser;
using iTextSharp.text.pdf;
using System.IO;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//The two files that we are creating
string file1 = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "File1.pdf");
string file2 = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "File2.pdf");
//Create a base file to write on top of
using (FileStream fs = new FileStream(file1, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (Document doc = new Document(PageSize.LETTER))
{
using (PdfWriter writer = PdfWriter.GetInstance(doc, fs))
{
doc.Open();
doc.Add(new Paragraph("Hello world"));
doc.Close();
}
}
}
//Bind a reader to our first document
PdfReader reader = new PdfReader(file1);
//Create our second document
using (FileStream fs = new FileStream(file2, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (PdfStamper stamper = new PdfStamper(reader, fs))
{
StyleSheet styles = new StyleSheet();
//...styles omitted for brevity
//Our HTML
string html = "<table><tr><th>First Name</th><th>Last Name</th></tr><tr><td>Chris</td><td>Haas</td></tr></table>";
//ParseToList requires a StreamReader instead of just a string so just wrap it
using (StringReader sr = new StringReader(html))
{
//Get our raw PdfContentByte object letting us draw "above" existing content
PdfContentByte cb = stamper.GetOverContent(1);
//Create a new ColumnText object bound to the above PdfContentByte object
ColumnText ct = new ColumnText(cb);
//Get the dimensions of the first page of our source document
iTextSharp.text.Rectangle page1size = reader.GetPageSize(1);
//Create a single column object spanning the entire page
ct.SetSimpleColumn(0, 0, page1size.Width, page1size.Height);
ct.AddElement(new Paragraph("Hello world!"));
//Convert our HTML to iTextSharp elements
List<IElement> elements = iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(sr, styles);
//Loop through each element (in this case there's actually just one PdfPTable)
foreach (IElement el in elements)
{
//If the element is a PdfPTable
if (el is PdfPTable)
{
//Cast it
PdfPTable tt = (PdfPTable)el;
//Change the widths, these are relative width by the way
tt.SetWidths(new float[] { 75, 25 });
}
//Add the element to the ColumnText
ct.AddElement(el);
}
//IMPORTANT, this actually commits our object to the PDF
ct.Go();
}
}
}
this.Close();
}
}
}
protected void LinkPdf_Click(object sender, EventArgs e)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=TestPage.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
this.Page.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
}