How to generate DYNAMIC PDF in C# using iTextSharp (or other method)
I have an MVC3 app (C#, razor) with an object that has all of the data I need for a dynamic PDF report that is to be viewed in the users browser. My Companies VS2010 solution already has iTextSharp.dll v 5.0.5 referenced and is used elsewhere for "stamping" values on a static PDF form.
All of the examples I find for iTextSharp are doing Static PDF with stamper(easy) or they are using 4.1.6 and they leverage iTextHandler. ITextHandler is not in v 5.0.5. I tried using HTMLWorker with no luck. My code is below
3 ways to do dynamic PDF
preferred solution: 1. I want to bind to a dynamic PDF form. By dynamic, I mean the ability to do repeating subforms, etc. I have a PDF I created in Adobe LifeCycle ES2 and saved as a XLA. I see all of the Adobe Docs referr开发者_如何学Going to making connections with XML, etc. but no examples of how to actually implement this. I know this can't be hard. Example in C# please?
optional solution: 2. Use what I have now (Works w/ iTextSharp.dll 4.1.6 only) Use
optional solution: 3. Generate as HTML and start looking at HTML to PDF methods
Option 2 Code: This code is in a controller class:
/// <summary>
/// Returns a PDF action result. This method renders the view to a string then
/// use that string to generate a PDF file. The generated PDF file is then
/// returned to the browser as binary content. The view associated with this
/// action should render an XML compatible with iTextSharp xml format.
/// </summary>
/// <param name="model">The model to send to the view.</param>
/// <returns>The resulted BinaryContentResult.</returns>
protected ActionResult ViewPdf(object model)
{
// Create the iTextSharp document.
Document doc = new Document();
// Set the document to write to memory.
MemoryStream memStream = new MemoryStream();
PdfWriter writer = PdfWriter.GetInstance(doc, memStream);
writer.CloseStream = false;
doc.Open();
//// Render the view xml to a string, then parse that string into an XML dom.
string xmltext = this.RenderActionResultToString(this.View(model));
#region This code works with iTextSharp version 4.1.6.0 (free version of iTextSharp)
/*
XmlDocument xmldoc = new XmlDocument();
xmldoc.InnerXml = xmltext.Trim();
// Parse the XML into the iTextSharp document.
ITextHandler textHandler = new ITextHandler(doc);
textHandler.Parse(xmldoc);
*/
#endregion
#region This code works with iTextSharp version 5.0.5 (not free version of iTextSharp)
HTMLWorker htmlWorker = new HTMLWorker(doc);
StringReader reader = new StringReader(xmltext);
htmlWorker.Parse(reader);
#endregion
// Close and get the resulted binary data.
doc.Close();
byte[] buf = new byte[memStream.Position];
memStream.Position = 0;
memStream.Read(buf, 0, buf.Length);
// Send the binary data to the browser.
return new BinaryContentResult(buf, "application/pdf");
}
#endregion
Option 2 Code: This code is in a view (cshtml) file:
@model SomeModelSpecificToMyPurpose
<?xml version="1.0" encoding="UTF-8" ?>
<itext creationdate="@DateTime.Today" producer="iTextSharpXML">
<paragraph leading="18.0" font="unknown" size="16.0" align="Default">
<chunk>RTPA Result in PDF</chunk>
</paragraph>
<paragraph leading="18.0" font="unknown" size="16.0" align="Default">
<chunk>@DateTime.Today</chunk>
</paragraph>
<paragraph leading="18.0" font="unknown" size="10.0" align="Default">
<chunk>Customer Name: @this.Model.Transaction.PatientFirstName</chunk><newline />
<chunk>Address: @this.Model.Transaction.ProviderFullName</chunk><newline />
</paragraph>
<paragraph leading="18.0" font="unknown" size="10.0" align="Default">
<chunk font="unknown" size="12.0">Orders:</chunk><newline />
</paragraph>
LifeCycle forms and iText don't get along all that well. It'll get/set values, but that's about it.
You could do something similar by regenerating your form in code for each user, but that's a non-trivial task.
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