Develop Reference

How to dynamically link bookmarks to table of contents using PDFsharp + MigraDoc

I'm trying to create a Table of Contents using MigraDoc and PDFsharp and I've gotten really close but the problem I'm currently having is that the links on the Table of Contents all take me to the very first page of the PDF. I'm trying to link them to their respective pages. PDFSharp bookmarks work fine but when trying to create a table of contents based on the merged PDF it's not working.
static void TableOfContents(PdfDocument document)
{
// Puts the Table of contents on the second page
PdfPage page = document.Pages[1];
XGraphics gfx = XGraphics.FromPdfPage(page);
gfx.MUH = PdfFontEncoding.Unicode;
// Create MigraDoc document + Setup styles
Document doc = new Document();
Styles.DefineStyles(doc);
// Add header
Section section = doc.AddSection();
Paragraph paragraph = section.AddParagraph("Table of Contents");
paragraph.Format.Font.Size = 14;
paragraph.Format.Font.Bold = true;
paragraph.Format.SpaceAfter = 24;
paragraph.Format.OutlineLevel = OutlineLevel.Level1;
// Add links - these are the PdfSharp outlines/bookmarks
// added previously when concatinating the pages
foreach (var bookmark in document.Outlines)
{
paragraph = section.AddParagraph();
paragraph.Style = "TOC";
paragraph.AddBookmark(bookmark.Title);
Hyperlink hyperlink = paragraph.AddHyperlink(bookmark.Title);
hyperlink.AddText($"{bookmark.Title}\t");
hyperlink.AddPageRefField(bookmark.Title);
}
// Render document
DocumentRenderer docRenderer = new DocumentRenderer(doc);
docRenderer.PrepareDocument();
docRenderer.RenderPage(gfx, 1);
gfx.Dispose();
}
Ideally I want it to return the file's name (which it's doing) and the page number (it's only returning the first page). This is what it's currently outputting.
Table of Contents
file name here......................... 1
file name here......................... 1
file name here......................... 1
file name here......................... 1

As I understand it, the Hyperlink and bookmark should be unique to the document.
Otherwise the link will be made to the first paragraph containing the bookmark.
I simply use a number which I increase for a simple report I make.
private void DefineTOCLine(int level, string text, Paragraph linkTo)
{
var tocIndex = (tocindex++).ToString(CultureInfo.InvariantCulture);
var paragraph = tocsection.AddParagraph();
paragraph.Style = level == 1 ? "TOC1" : "TOC2";
var hyperlink = paragraph.AddHyperlink(tocIndex);
hyperlink.AddText(text + "\t");
hyperlink.AddPageRefField(tocIndex);
linkTo.AddBookmark(tocIndex);
}

You invoke hyperlink.AddPageRefField to set a reference, but as far as I can tell you never create the MigraDoc bookmark for the target of the reference by calling MigraDoc's AddBookmark method.
MigraDoc bookmarks are different from PDF file bookmarks.

How to convert Multiple HTML Pages to Single Doc in c#

I am converting a single HTML page to Doc using spire doc. I need to convert multiple html pages from single folder to single Doc. How this can be done. Can anyone give some idea or any library available to achieve this?
Please find my code to convert single HTML to Doc.
Spire.Doc.Document document = new Spire.Doc.Document();
document.LoadFromFile(#"D:\DocFilesConvert\htmlfile.html", Spire.Doc.FileFormat.Html, XHTMLValidationType.None);
document.SaveToFile(#"D:\DocFilesConvert\docfiless.docx", Spire.Doc.FileFormat.Docx);

There seems no direct way to achieve this. One workaround I find is to convert each HTML document to a single Word file, and then merge these Word files in one file.
//get HTML file paths
string[] htmlfilePaths = new string[]{
#"F:\Documents\Html\1.html",
#"F:\Documents\Html\2.html",
#"F:\Documents\Html\3.html"
};
//create Document array
Document[] docs = new Document[htmlfilePaths.Length];
for (int i = 0; i < htmlfilePaths.Length; i++)
{
//load each HTML to a sperate Word file
docs[i] = new Document(htmlfilePaths[i], FileFormat.Html);
//combine these Word files in one file
if (i>=1)
{
foreach (Section sec in docs[i].Sections)
{
docs[0].Sections.Add(sec.Clone());
}
}
}
//save to a Word document
docs[0].SaveToFile("output.docx", FileFormat.Docx2013);

Edit Total Number of Pages in Footer SelectPDF

I am converting html page to pdf using HtmlToPdf() of SelectPDF. Since html content is big, I am breaking it in half and creating 2 PDFs.
I am struggling to edit the total_pages in the footer to display actual total number of the pages, not only the current document; as well as page_number to display the actual page number in the context of both PDFs.
How can I assess {page_number} and {total_pages} to calculate proper values? All examples I found use PdfDocument(), not HtmlToPdf().
Dim converter As New HtmlToPdf()
Dim text As New PdfTextSection(0, 10, "Page: {page_number} of {total_pages} ")
text.HorizontalAlign = PdfTextHorizontalAlign.Center
converter.Footer.Add(text)
I am tagging both C# and VB since SelectPDF is for both languages, and relevant sample from either one will work for me. Thank you

Today I've stumbled upon the same issue and I have found a work-around for the problem. The converter was able to show page numbers for it's the generated document but can't be aware of multiple generated files (you can't access the page properties) so all my pages I concatenated were showing Page 1 of 1.
First I define one PdfDocument (see it as the main document) and I use HtmlToPdf to append html converted files to this main document.
// Create converter
converter = new HtmlToPdf();
PdfTextSection text = new PdfTextSection(0, 10, "Page: {page_number} of {total_pages} ", new Font("Arial", 8));
text.HorizontalAlign = PdfTextHorizontalAlign.Right;
converter.Footer.Add(text);
// Create main document
pdfDocument = new PdfDocument();
Then I add pages (from html) using this method
public void AddPage(string htmlPage)
{
PdfDocument doc = converter.ConvertHtmlString(htmlPage);
pdfDocument.Append(doc);
converter.Footer.TotalPagesOffset += doc.Pages.Count;
converter.Footer.FirstPageNumber += doc.Pages.Count;
}
This results in correct page numbers for the main document. The same trick could be used for splitting files and page numbers over multiple documents like you described.
EDIT: In case you don't see any page numbering using the HtmlToPdf converter, don't forget to set following property:
converter.Options.DisplayFooter = true;

There is an open source library called itextsharp that will help get total page count.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using iTextSharp.text.pdf;
using iTextSharp.text.xml;
namespace GetPages_PDF
{
class Program
{
static void Main(string[] args)
{
// Right side of equation is location of YOUR pdf file
string ppath = "C:\\aworking\\Hawkins.pdf";
PdfReader pdfReader = new PdfReader(ppath);
int numberOfPages = pdfReader.NumberOfPages;
Console.WriteLine(numberOfPages);
Console.ReadLine();
}
}
}
Then you can stamp text also on the page but you will need to add the location to where it needs to go.
link: http://crmhunt.com/how-to-modify-pdf-file-using-itextsharp/
hope this helps in some way.

You should use the following properties:
FirstPageNumber - Controls the page number for the first page being
rendered.
TotalPagesOffset - Controls the total number of pages
offset in the generated pdf document.
More details here:
http://selectpdf.com/html-to-pdf/docs/html/HtmlToPdfHeadersAndFooters.htm

The answers above did not work for me as I was trying to merge multiple PDFs with different orientations. bonnoj's answer did add page numbers but they were incorrect and I couldn't find a way to correct them. So I took a different approach - I created a PDF, then for each HTML page I added a pdfPage and then added a PdfHtmlElement to that page. Finally I loop over the pages and add a custom footer to each page. This may not be the most efficient way to do this but it's the only way that I could find that added the footer in the correct place when mixing portrait and landscape pages. Hopefully it will save somebody else spending hours playing with different properties.
var pdfDocument = new PdfDocument(PdfStandard.Full);
foreach (var (html, pdfPageOrientation) in pages)
{
var page = pdfDocument.AddPage(PdfCustomPageSize.A4, new PdfMargins(marginLeft, marginRight, marginTop, marginBottom));
page.Orientation = pdfPageOrientation;
var pdfHtmlElement = new PdfHtmlElement(html, "");
page.Add(pdfHtmlElement);
}
var pdfFont = pdfDocument.AddFont(PdfStandardFont.Helvetica);
pdfFont.Size = 12;
foreach (PdfPage page in pdfDocument.Pages)
{
var customFooter = pdfDocument.AddTemplate(page.PageSize.Width, 30);
var pdfFooterTextElement = new PdfTextElement(0, 15,
pageFooterText,
pdfFont)
{
HorizontalAlign = PdfTextHorizontalAlign.Right,
VerticalAlign = PdfTextVerticalAlign.Bottom,
};
customFooter.Add(pdfFooterTextElement);
page.CustomFooter = customFooter;
}
pdfDocument.Save(stream);

Generate PDF from large html

I am generating a PDF from an HTML string.
When this string is really long, I would like to create a new page, split the text (without breaking the html) and so on.
Here is my code :
// instantiate Pdf object
Aspose.Pdf.Generator.Pdf pdf = new Aspose.Pdf.Generator.Pdf();
// specify the Character encoding for for HTML file
pdf.HtmlInfo.CharSet = "UTF-8";
pdf.HtmlInfo.Margin.Left = 10;
pdf.HtmlInfo.Margin.Right = 10;
pdf.HtmlInfo.PageHeight = 1050;
pdf.HtmlInfo.PageWidth = 730;
pdf.HtmlInfo.ShowUnknownHtmlTagsAsText = true;
pdf.HtmlInfo.TryEnlargePredefinedTableColumnWidthsToAvoidWordBreaking = true;
pdf.HtmlInfo.CharsetApplyingLevelOfForce = Aspose.Pdf.Generator.HtmlInfo.CharsetApplyingForceLevel.UseWhenImpossibleDetectFromContent;
// bind the source HTML
pdf.BindHTML("MyVeryVeryLongHTML");
MemoryStream stream = new MemoryStream();
pdf.Save(stream);
byte[] pdfBytes = stream.ToArray();
This code works for the HTML, but the overflow is not handled. The text continue after the page. Is it possible to set a max "height" of the page to not cross, and if it does, it recreates a new page ?
Hope it makes sense !
Thanks a lot

You can set the Page height by selecting type of PDF page you require like A1, A2, etc . Afterwords , your problem of page height will automatically be taken care by the Aspose. For more refer the link..
Aspose PDF Page Height
Update
update pdf.HtmlInfo to pdf.PageSetup (or pdf.PageInfo) and add bottom margin also.

Adding links to pdf by using MigraDoc

I use MigraDoc for creating pdf documents in the project.
Code below shows how I work with library:
var document = new Document { Info = { Author = "title" } };
Section section = document.AddSection();
Paragraph paragraph = section.AddParagraph("Title");
var renderer = new PdfDocumentRenderer(true, PdfSharp.Pdf.PdfFontEmbedding.Always) { Document = document };
renderer.RenderDocument();
So, I'm looking for a way to adding link to web resource inside pdf.
Does someone know?)
-------------Solution-------------------
I found solution!
I tried to use AddHyperlink() for adding link, and it was the first step for this. The code below shows correct using:
var h = paragraph.AddHyperlink("http://stackoverflow.com/",HyperlinkType.Web);
h.AddFormattedText("http://www.stackoverflow.com/");

To add a link use AddHyperlink():
var h = paragraph.AddHyperlink("http://stackoverflow.com/",HyperlinkType.Web);
h.AddFormattedText("http://www.stackoverflow.com/");
So the idea that you should add some text for a link to make link visible.

Use paragraph.AddHyperlink() for that purpose. You will need HyperlinkType.Web.