Active11 months ago

@Chris Haas has explained very well how to use itextSharp to convert HTML to PDF, very helpful my add is: By using HtmlTextWriter I put html tags inside HTML table + inline CSS i got my PDF as I wanted without using XMLWorker. Here Mudassar Ahmed Khan has explained with an example, how to export HTML string to PDF file using iTextSharp in ASP.Net with C# and VB.Net. The HTML string will be exported and downloaded as PDF file using iTextSharp XMLWorkerHelper library in ASP.Net with C# and VB.Net. TAGs: ASP.Net, iTextSharp, HTML. ITextSharp is a.NET PDF library which allows you to generate PDF (Portable Document Format). There are many other feature of ITextSharp but currently we are implementing the feature to generate PDF from HTML content in ASP.NET MVC.

Converting PDF layout to HTML layout is very hard because the PDF design philosophy is very different from how HTML layouting works. Google has some sort of solution for it but it will usually break layout. Regarding your CV concept: As CV layout is highly important for customers using a site I would not want to auto-convert PDF CVs to HTML CVs. Convert HTML with CSS to PDF using iTextSharp. Ask Question. I want to convert a HTML DIV which contains various html elements like divs,label, tables and images.

I'm trying to convert HTML to PDF using iTextSharp in an ASP.NET web application that uses both MVC, andweb forms. The <img> and <a> elements have absolute and relative URLs, and some of the <img> elements are base64. Typical answers here at SO and Google search results use generic HTML to PDF code with XMLWorkerHelper that looks something like this:

So with sample HTML like this:

The resulting PDF: (1) is missing all images, and (2) all hyperlink(s) with relative URLs are broken and use a file URI scheme (file///XXX..) instead of pointing to the correct web site.

Some answers here at SO and others from Google search recommend replacing relative URLs with absolute URLs, which is perfectly acceptable for one-off cases. However, globally replacing all <img src> and <a href> attributes with a hard-coded string is unacceptable for this question, so please do not post an answer like that, because it will accordingly be downvoted.

Am looking for a solution that works for many different web applications residing in test, development, and production environments.

kuujinbo

kuujinbokuujinbo

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2 Answers

Out of the box XMLWorkeronly understands absolute URIs, so the described issues are expected behavior. The parser can't automagically deduce URI schemes or paths without some additional information.

Implementing an ILinkProvider fixes the broken hyperlink problem, and implementing an IImageProvider fixes the broken image problem. Since both implementations must perform URI resolution, that's the first step. The following helper class does that, and also tries to make web (ASP.NET) context calls (examples follow) as simple as possible:

Itextsharp Convert Html Page To Pdf

Implementing ILinkProvider is pretty simple now that UriHelper gives the base URI. We just need the correct URI scheme (file or http[s]):

IImageProvider only requires implementing a single method, Retrieve(string src), but Store(string src, Image img) is easy - note inline comments there and for GetImageRootPath():

Free activation key for driver easy pro. Based on the XML Worker documentation it's pretty straightforward to hook the implementations of ILinkProvider and IImageProvider above into a simple parser class:

As commented inline, SimpleAjaxImgFix(string xHtml) specifically handles XHR that may send unclosed <img> tags, which is validHTML, but invalidXML that will break XMLWorker . A simple explanation & implementation of how to receive a PDF or other binary data with XHR and iTextSharp can be found here.

A Regex was used in SimpleAjaxImgFix(string xHtml) so that anyone using (copy/paste?) the code doesn't need to add another nuget package, but a HTML parser like HtmlAgilityPackshould be used, since it's turns this:

into this:

with only a few lines of code:

Also of note - use SimpleParser.Parse() above as a general blueprint to additionally implement a custom ICSSResolver or ITagProcessorFactory, which is explained in the documentation.

Now the issues described in the question should be taken care of. Called from a MVC Action Method:

Convert Html To Pdf Online

or from a Web Form that gets HTML from a server control:

or a simple HTML file with hyperlinks and images on the file system:

or HTML from a remote web site:

Only once it mysteriously appeared but when I tried to connect it gave ‘Host is using the device’ error, but then no files or even explorer window was open on host.I even tried installing the Etron drivers in Guest but it fails.I think there’s some incompatibility between the Etron Host device and the Intel USB 3 controller driver. https://hairclever.amebaownd.com/posts/18265321. There’s no issue with USB 2 ports at all.What else can I try? I am having a tough time in getting USB 3 work with VMWare Player 12 on Windows 7.Host – Gigabyte 880GM USB3 board with Etron USB 3 controller. AMD Athlon CPU, 12GB RAM, Windows 7 64Guest – VMWare Player 12, Windows 7 64, 4GB RAM, USB 3 enabled in VM configuration and successfully installed the recommended Intel(R)USB3.0eXtensibleHostControllerDriver5.0.3.42 in Guest Windows 7The issue is when I connect a USB 2 or USB 3 pen drive at Host USB 3 port it is just not detected in the VM at all.

Above two HTML snippets run from a console app:

Quite a long answer, but taking a look at questions here at SO tagged html, pdf, and itextsharp, as of this writing (2016-02-23) there are 776 results against 4,063 total tagged itextsharp - that's 19%.

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kuujinbokuujinbo

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Very helpful post,

Itextsharp Convert Html To Pdf online, free

I was problem to render images in my report html to pdf. with your post I could do it.

I'm working with asp.mvc 5.

I only have to change this method of the ImageProviderClass

thanks!

Itextsharp Pdfreader Example

Stephen Rauch

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