Class HTML2PDF

'pdftron.PDF.HTML2PDF' is an optional PDFNet Add-On utility class that can be used to convert HTML web pages into PDF documents by using an external module (html2pdf).

The html2pdf modules can be downloaded from http: www.pdftron.com/pdfnet/downloads.html.

Users can convert HTML pages to PDF using the following operations: - Simple one line static method to convert a single web page to PDF. - Convert HTML pages from URL or string, plus optional table of contents, in user defined order. - Optionally configure settings for proxy, images, java script, and more for each HTML page. - Optionally configure the PDF output, including page size, margins, orientation, and more. - Optionally add table of contents, including setting the depth and appearance.

The following code converts a single webpage to pdf

using System;
using System.IO;
using pdftron;
using pdftron.Common;
using pdftron.SDF;
using pdftron.PDF;

using (PDFDoc doc = new PDFDoc())
{
	if ( HTML2PDF.Convert(doc, "http://www.gutenberg.org/wiki/Main_Page") )
		doc.Save(outputFile, SDFDoc.SaveOptions.e_linearized);
}

The following code demonstrates how to convert multiple web pages into one pdf, including any images and the background, but with lowered image quality to save space.

using System;
using System.IO;
using pdftron;
using pdftron.Common;
using pdftron.SDF;
using pdftron.PDF;

using (PDFDoc doc = new PDFDoc())
{
	HTML2PDF converter = new HTML2PDF();
	converter.SetImageQuality(25);

	HTML2PDF.WebPageSettings settings = new HTML2PDF.WebPageSettings();
	settings.SetPrintBackground(false);

	converter.InsertFromURL("http://www.gutenberg.org/wiki/Main_Page", settings);

	if ( HTML2PDF.Convert(doc, "http://en.wikipedia.org/wiki/Canada") )
		doc.Save(outputFile, SDFDoc.SaveOptions.e_linearized);
}

Inheritance

System.Object

HTML2PDF

Implements

System.IDisposable

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: pdftron.PDF

Assembly: PDFTronDotNet.dll

Syntax

public class HTML2PDF : IDisposable

Constructors

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HTML2PDF()

Default constructor.

Declaration

public HTML2PDF()

Methods

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Convert(PDFDoc)

Convert HTML documents and append the results to doc.

Declaration

public bool Convert(PDFDoc doc)

Parameters

Type	Name	Description
PDFDoc	doc	Target PDF to which converted HTML pages will be appended to.

Returns

Type	Description
System.Boolean	true if successful, otherwise false. Use GetHttpErrorCode for possible HTTP errors.

Remarks

html2pdf module must be located in the working directory, or with the PDFNet library.

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Convert(PDFDoc, String)

Convert the HTML document at url and append the results to doc.

Declaration

public static bool Convert(PDFDoc doc, string url)

Parameters

Type	Name	Description
PDFDoc	doc	Target PDF to which converted HTML pages will be appended to.
System.String	url	HTML page, or relative path to local HTML page, that will be converted to PDF format.

Returns

Type	Description
System.Boolean	true if successful, otherwise false. Use GetHttpErrorCode for possible HTTP errors.

Remarks

html2pdf module must be located in the working directory, or with the PDFNet library.

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Convert(PDFDoc, String, HTML2PDF.WebPageSettings)

Convert the HTML document at url and append the results to doc.

Declaration

public static bool Convert(PDFDoc doc, string url, HTML2PDF.WebPageSettings settings)

Parameters

Type	Name	Description
PDFDoc	doc	Target PDF to which converted HTML pages will be appended to.
System.String	url	HTML page, or relative path to local HTML page, that will be converted to PDF format.
HTML2PDF.WebPageSettings	settings	Modify how the web page is loaded and converted.

Returns

Type	Description
System.Boolean	true if successful, otherwise false. Use GetHttpErrorCode for possible HTTP errors.

Remarks

html2pdf module must be located in the working directory, or with the PDFNet library.

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Destroy()

Declaration

public void Destroy()

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Dispose()

Declaration

public void Dispose()

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Dispose(Boolean)

Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing

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DumpOutline(String)

Save outline to a xml file.

Declaration

public void DumpOutline(string xml_file)

Parameters

Type	Name	Description
System.String	xml_file	Path of where xml data representing outline of produced PDF should be saved to.

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Finalize()

Releases all resources used by the HTML2PDF

Declaration

protected void Finalize()

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GetHTTPErrorCode()

Return the largest HTTP error code encountered during conversion

Declaration

public int GetHTTPErrorCode()

Returns

Type	Description
System.Int32	the largest HTTP code greater then or equal to 300 encountered during loading of any of the supplied objects, if no such error code is found 0 is returned.

Remarks

This function will only return a useful result after Convert has been called.

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GetLog()

Get results of conversion, including errors and warnings, in human readable form.

Declaration

public string GetLog()

Returns

Type	Description
System.String	String containing results of conversion.

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InsertFromHtmlString(String)

Convert HTML encoded in string.

Declaration

public void InsertFromHtmlString(string html)

Parameters

Type	Name	Description
System.String	html	String containing HTML code.

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InsertFromHtmlString(String, HTML2PDF.WebPageSettings)

Convert HTML encoded in string.

Declaration

public void InsertFromHtmlString(string html, HTML2PDF.WebPageSettings settings)

Parameters

Type	Name	Description
System.String	html	String containing HTML code.
HTML2PDF.WebPageSettings	settings	How the HTML content described in html is loaded.

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InsertFromURL(String)

Add a web page to be converted. A single URL typically results in many PDF pages.

HTML page, or relative path to local HTML page

Declaration

public void InsertFromURL(string url)

Parameters

Type	Name	Description
System.String	url

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InsertFromURL(String, HTML2PDF.WebPageSettings)

Add a web page to be converted. A single URL typically results in many PDF pages.

Declaration

public void InsertFromURL(string url, HTML2PDF.WebPageSettings settings)

Parameters

Type	Name	Description
System.String	url	HTML page, or relative path to local HTML page.
HTML2PDF.WebPageSettings	settings	How the web page should be loaded and converted

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InsertTOC()

Add a table of contents to the produced PDF.

Declaration

public void InsertTOC()

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InsertTOC(HTML2PDF.TOCSettings)

Add a table of contents to the produced PDF.

Declaration

public void InsertTOC(HTML2PDF.TOCSettings settings)

Parameters

Type	Name	Description
HTML2PDF.TOCSettings	settings	Settings for the table of contents.

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SetCookieJar(String)

Path of file used for loading and storing cookies.

Declaration

public void SetCookieJar(string path)

Parameters

Type	Name	Description
System.String	path	Path to file used for loading and storing cookies.

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SetDPI(Int32)

Change the DPI explicitly for the output PDF.

Declaration

public void SetDPI(int dpi)

Parameters

Type	Name	Description
System.Int32	dpi	Dots per inch, e.g. 80. This has no effect on X11 based systems. Results also depend on SetSmartShrinking.

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SetImageDPI(Int32)

Maximum DPI to use for images in the generated PDF.

Declaration

public void SetImageDPI(int dpi)

Parameters

Type	Name	Description
System.Int32	dpi	Maximum dpi of images in produced PDF, e.g. 80.

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SetImageQuality(Int32)

JPEG compression factor to use when generating PDF.

Declaration

public void SetImageQuality(int quality)

Parameters

Type	Name	Description
System.Int32	quality	Compression factor, e.g. 92.

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SetLandscape(Boolean)

Set page orientation for output PDF.

Declaration

public void SetLandscape(bool enable)

Parameters

Type	Name	Description
System.Boolean	enable	If true generated PDF pages will be orientated to landscape, otherwise orientation will be portrait.

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SetMargins(String, String, String, String)

Set margins of generated PDF.

Declaration

public void SetMargins(string top, string bottom, string left, string right)

Parameters

Type	Name	Description
System.String	top	Size of the top margin, e.g. "2cm".
System.String	bottom	Size of the bottom margin, e.g. "2cm".
System.String	left	Size of the left margin, e.g. "2cm".
System.String	right	Size of the right margin, e.g. "2cm".

Remarks

Supported units are mm, cm, m, in, pica(pc), pixel(px) and point(pt).

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SetModulePath(String)

Set the first location that PDFNet will look for the html2pdf module.

Declaration

public static void SetModulePath(string path)

Parameters

Type	Name	Description
System.String	path	A folder or file path. If non-empty, PDFNet will only look in path for the html2pdf module, otherwise it will search in the default locations for the module.

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SetOutline(Boolean, Int32)

Add bookmarks to the PDF.

Declaration

public void SetOutline(bool enable, int depth)

Parameters

Type	Name	Description
System.Boolean	enable	If true bookmarks will be generated for the produced PDF.
System.Int32	depth	Maximum depth of the outline (e.g. 4).

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SetPaperSize(PrinterMode.PaperSize)

Set paper size of output PDF

Declaration

public void SetPaperSize(PrinterMode.PaperSize size)

Parameters

Type	Name	Description
PrinterMode.PaperSize	size	Paper size to use for produced PDF.

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SetPaperSize(String, String)

Manually set the paper dimensions of the produced PDF.

Declaration

public void SetPaperSize(string width, string height)

Parameters

Type	Name	Description
System.String	width	Width of the page, e.g. "4cm".
System.String	height	Height of the page, eg. "12in".

Remarks

Supported units are mm, cm, m, in, pica(pc), pixel(px) and point(pt).

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SetPDFCompression(Boolean)

Use lossless compression to create PDF.

Declaration

public void SetPDFCompression(bool enable)

Parameters

Type	Name	Description
System.Boolean	enable	If true loss less compression will be used to create PDF.

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SetQuiet(Boolean)

Display HTML to PDF conversion progress, warnings, and errors, to stdout.

Declaration

public void SetQuiet(bool quiet)

Parameters

Type	Name	Description
System.Boolean	quiet	If false, progress information is sent to stdout during conversion.

Remarks

You can get the final results using GetLog.

Implements

System.IDisposable