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I'm trying to create a method that will send a PDF file directly to my printer (causing the print dialog to appear).
Below is the code I've been working on - most of it found in the forums here. It works fine if I use iTextSharp to create a new PDF document, but as soon as I try to inject some JavaScript into an existing file, I get an exception when calling the print() method saying
Object doesn't support property or method 'print'
<script type="text/javascript">
function load() {
try {
var x = document.getElementById("frame1");
x.print();
}
catch (err) {
}
}
</script>
<body onload="load();">
<form id="form1" runat="server">
<div>
<iframe id="frame1" src="C:/1686850_1.pdf" runat="server" frameborder="0" style="height: 0px; width: 0px;" />
</div>
</form>
</body>
</html>
.CS file
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
public partial class Print : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SetPDF(File.ReadAllBytes("C:\\1686850.pdf"), "C:\\1686850_1.pdf"); //test files
}
private void SetPDF(byte[] file, string outputPath)
{
PdfReader reader = new PdfReader(file);
int pageCount = reader.NumberOfPages;
Rectangle pageSize = reader.GetPageSize(1);
Document pdf = new Document(pageSize);
PdfWriter writer = PdfWriter.GetInstance(pdf, new FileStream(outputPath, FileMode.Create));
pdf.Open();
//This action leads directly to printer dialogue
PdfAction jAction = PdfAction.JavaScript("this.print(true);\r", writer);
writer.AddJavaScript(jAction);
//Omitting this loop and simply adding some text to the file produces the behavior I want.
for (int i = 0; i < pageCount; i++)
{
pdf.NewPage();
PdfImportedPage page = writer.GetImportedPage(reader, i + 1);
writer.DirectContent.AddTemplate(page, 0, 0);
}
pdf.Close();
//Open the pdf in the frame
frame1.Attributes["src"] = outputPath;
}
}
371
I found a way to do this here: http://wskidmore.com/2011/03/pdf-initial-view-settings-itextsharp/
Based on that, I wrote this code:
private void PrintMenu()
{
...
var notUriPath = Server.MapPath("~/" + filePathName);
var doc = new Document();
var reader = new PdfReader(notUriPath);
using (var memoryStream = new MemoryStream())
{
var writer = PdfWriter.GetInstance(doc, memoryStream);
doc.Open();
// this action leads directly to printer dialogue
var jAction = PdfAction.JavaScript("this.print(true);\r", writer);
writer.AddJavaScript(jAction);
var cb = writer.DirectContent;
doc.AddDocListener(writer);
for (var p = 1; p <= reader.NumberOfPages; p++)
{
doc.SetPageSize(reader.GetPageSize(p));
doc.NewPage();
var page = writer.GetImportedPage(reader, p);
var rot = reader.GetPageRotation(p);
if (rot == 90 || rot == 270)
cb.AddTemplate(page, 0, -1.0F, 1.0F, 0, 0, reader.GetPageSizeWithRotation(p).Height);
else
cb.AddTemplate(page, 1.0F, 0, 0, 1.0F, 0, 0);
}
reader.Close();
doc.Close();
File.WriteAllBytes(notUriPath, memoryStream.ToArray());
}
theIframeForPrint.Attributes.Add("src", fullFilePath);
}
I hope it helps!
177
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