pdf conversion in c# : Extract data from pdf form to excel application SDK tool html .net asp.net online itext_so-sample6-part1257

Interactiveforms
55
How to fill out apdf file programmatically? (Dynamic
XFA)
Ihave a dynamic XFAForm thatI can filloutmanuallyusingAdobe Acrobat on my
computer.UsingiTextSharpIcanreadwhattheXFAXMLdataisandseethestructureof
thedata.IamessentiallytryingtomimicthatwithiTextusingthefollowingcode:
PdfReader pdfReader = new PdfReader(sourceFilePath);
using (MemoryStream ms = new MemoryStream()) {
using (PdfStamper stamper = new PdfStamper(pdfReader, ms)) ) {
XfaForm xfaForm = new XfaForm(pdfReader);
XmlDocument doc = new XmlDocument();
doc.Load(replacementXmlFilePath);
xfaForm.DomDocument = doc;
xfaForm.Changed = true;
XfaForm.SetXfa(xfaForm, stamper.Reader, stamper.Writer);
}
var bytes = = ms.ToArray();
File.WriteAllBytes(destinationtFilePath, bytes);
}
Forsomereasonthiscodedoesn’twork.
PostedonStackOverflowonMay11,2013⁹⁸byjon333⁹⁹
Thisquestionwasansweredbythepersonwhopostedthequestion:
Ifoundtheissue.ThereplacementDomDocumentneedstobetheentiremergedXMLof
thenewdocument,notjustthedataordatasetsportion.
Iupvotedthisanswer,becauseit’snotincorrect,butnowthatIthinkit’sbettertousetheexample
fromthebook¹⁰⁰:
⁹⁸
http://stackoverflow.com/questions/16502427/how-can-i-set-xfa-data-in-a-static-xfa-form-in-itextsharp-and-get-it-to-save
⁹⁹
http://stackoverflow.com/users/511518/jon333
¹⁰⁰
http://itextpdf.com/examples/iia.php?id=165
Extract data from pdf form to excel - extract form data from PDF in C#.net, ASP.NET, MVC, Ajax, WPF
Help to Read and Extract Field Data from PDF with a Convenient C# Solution
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Extract data from pdf form to excel - VB.NET PDF Form Data Read library: extract form data from PDF in vb.net, ASP.NET, MVC, Ajax, WPF
Convenient VB.NET Solution to Read and Extract Field Data from PDF
c# read pdf form fields; extract data from pdf file
Interactiveforms
56
public byte[] ManipulatePdf(String src, String xml) {
PdfReader reader = new PdfReader(src);
using (MemoryStream ms = new MemoryStream()) {
using (PdfStamper stamper = new PdfStamper(reader, ms)) {
AcroFields form = stamper.AcroFields;
XfaForm xfa = form.Xfa;
xfa.FillXfaForm(XmlReader.Create(new StringReader(xml)));
}
return ms.ToArray();
}
}
Asyoucansee,it’snotnecessarytoreplacethewholeXFAXML.Ifyouusethe
FillXfaForm
method,
thedataissufficient.
VB.NET PDF Form Data fill-in library: auto fill-in PDF form data
Image: Insert Image to PDF. Image: Remove Image from PDF Page. Image: Copy, Paste, Cut Image in Page. Data: Read, Extract Field Data. Data: Auto Fill-in Field
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C# PDF Form Data fill-in Library: auto fill-in PDF form data in C#
Able to fill out all PDF form field in C#.NET. RasterEdge XDoc.PDF SDK package provides PDF field processing features for learn how to fill-in field data to PDF
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Interactiveforms
57
How to fill XFA form using iText without breaking
usage rights?
Thisismycode:
using (FileStream pdf = new FileStream("C:/test.pdf", FileMode.Open))
using (FileStream xml = new FileStream("C:/test.xml", FileMode.Open))
using (FileStream filledPdf f = new FileStream("C:/test_f.pdf", FileMode.Create))
{
PdfReader pdfReader = new PdfReader(pdf);
PdfStamper stamper = new PdfStamper(pdfReader, filledPdf);
stamper.AcroFields.Xfa.FillXfaForm(xml);
stamper.Close();
pdfReader.Close();
}
Thiscodethrowsnoexception andeverythingseems tobeOK,butif Iopen filledpdf,
AdobeReadersayssomethinglikethis:
Thisdocumentenabledextendedfeatures.Thisdocumentwaschangedsince
itwascreatedandusingextendedfeaturesisn’tpossibleanymore.
If I choose xmlmanually by clicking ‘Import data’ from Adobe Reader, form is filled
properly,soIguessthereisnoerrorinxml.
PostedonStackOverflowonOct29,2014¹⁰¹bypaldir¹⁰²
Youarenotcreatingthe
PdfStamper
objectcorrectly.Use:
PdfStamper stamper = new PdfStamper(pdfReader, filledPdf, '\0'true)
Inyourcode,youarenotusing
PdfStamper
inappendmode.ThismeansthatiTextwillreorganize
thedifferentobjectsinyourPDF.Usuallythatisn’taproblem.
However:yourPDFisReader-enabled,whichmeansthatyourPDFisdigitallysignedusingaprivate
keyownedbyAdobe.ByreorganizingtheobjectsinsidethePDF,thatsignatureisbroken.Thisis
madeclearbythemessageyoualreadymentioned:
Thisdocument enabled extended features. This document waschangedsince itwas
createdandusingextendedfeaturesisn’tpossibleanymore.
¹⁰¹
http://stackoverflow.com/questions/26629498/how-to-fill-xfa-form-using-itext
¹⁰²
http://stackoverflow.com/users/4148435/paldir
VB.NET PDF Text Extract Library: extract text content from PDF
Extract highlighted text out of PDF document. Enable extracting PDF text to another PDF file, and other formats such as TXT and SVG form.
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C# PDF Image Extract Library: Select, copy, paste PDF images in C#
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Interactiveforms
58
Toavoidbreakingthesignature,youneedtouse
PdfStamper
inappendmode.Insteadofreorganiz-
ingtheoriginalcontent, iTextwillnowkeeptheoriginalfileintactandappendnewcontentafter
theendoftheoriginalfile.
VB.NET PDF Image Extract Library: Select, copy, paste PDF images
VB.NET. Extract multiple types of image from PDF file in VB.NET, like XObject Image, XObject Form, Inline Image, etc. Support .NET
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VB.NET Create PDF from Excel Library to convert xlsx, xls to PDF
Image: Insert Image to PDF. Image: Remove Image from PDF Page. Image: Copy, Paste, Cut Image in Page. Data: Read, Extract Field Data. Data: Auto Fill-in Field
how to fill out pdf forms in reader; extract pdf data into excel
Actions and annotations
Allthingsinteractivearediscussedhere.Exceptforforms,we’vealreadycoveredthese.
How to create alink to a specific page number?
IknowhowtotargetanytextofanyPDFpageusingcode:
Anchor click = new Anchor("Click to o go to o Target");
click.Reference = "#target";
Paragraph p1 = new Paragraph();
p1.Add(click);
doc.Add(p1);
Anchor target = new Anchor("Target");
target.Name = "target";
doc.Add(target);
Myquestionishowtotargetapagebasedon itsnumber.Forexampleif targeted page
numberis6,clickingontheAnchortextshouldtaketo6thpage.
PostedonStackOverflowonFeb20,2014¹⁰³byYogesh¹⁰⁴
Insteadofan
Anchor
,you needa
Chunk
.Tothis
Chunk
youneed to adda
PdfAction
.Theaction
needstobeagotoLocalPage()¹⁰⁵action.
Forinstance:
Chunk chunk = New Chunk("Go to page 5");
PdfAction action = PdfAction.GotoLocalPage(5, New PdfDestination(0), writer);
chunk.SetAction(action);
¹⁰³
http://stackoverflow.com/questions/21907184/itextsharp-how-to-target-pdf-page-number
¹⁰⁴
http://stackoverflow.com/users/532384/yogesh
¹⁰⁵
http://api.itextpdf.com/itext/com/itextpdf/text/pdf/PdfAction.html#gotoLocalPage%28int,%20com.itextpdf.text.pdf.PdfDestination,%20com.
itextpdf.text.pdf.PdfWriter%29
C# PDF Text Extract Library: extract text content from PDF file in
XDoc.PDF ›› C# PDF: Extract PDF Text. C# PDF - Extract Text from PDF in C#.NET. Feel Free to Extract Text from PDF Page, Page Region or the Whole PDF File.
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C# Create PDF from Excel Library to convert xlsx, xls to PDF in C#
Create PDF from Excel. |. Home ›› XDoc.PDF ›› C# PDF: Create PDF from Excel. Export PDF from Excel with cell border or no border.
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Actionsandannotations
60
How to insert a “linked rectangle” with iText?
IwanttoinsertahyperlinkintoanexistingPDFatapositionIknowinadvance:Ialready
havethecoordinatesofarectangleonagivenpage.Iwanttolinkthisrectangletoanother
pageofthesamePDF(whichIalsoknowinadvance).HowdoIachievethis?
PostedonStackOverflowonNov7,2013¹⁰⁶byHansStricker¹⁰⁷
PleasetakealookattheAddLinkAnnotation¹⁰⁸example.
Asyou(should) alreadyknow (butyoudidn’tshow whatyou’vealreadytried,which iskind of
mandatoryonStackOverflow),youcanuse
PdfStamper
tomanipulateanexisting PDF.Addinga
rectangularlinkononepagetoanotherpage,isassimpleasaddingalinkannotationtothatpage:
PdfReader reader new PdfReader(src);
PdfStamper stamper new PdfStamper(readernew FileOutputStream(dest));
Rectangle linkLocation new Rectangle(523, 770, 559, 806);
PdfDestination destination new PdfDestination(PdfDestination.FIT);
PdfAnnotation link = PdfAnnotation.createLink(stamper.getWriter(),
linkLocation, PdfAnnotation.HIGHLIGHT_INVERT,
3, destination);
link.setBorder(new PdfBorderArray(0, 0, 0));
stamper.addAnnotation(link, 1);
stamper.close();
The
link
objectiscreatedusing:
• the
writer
instancetiedtothe
stamper
,
• therectangle(thepositionyousayyouknowinadvance,
• a highlighting option (pick one:
HIGHLIGHT_NONE
,
HIGHLIGHT_INVERT
,
HIGHLIGHT_OUTLINE
,
HIGHLIGHT_PUSH
,
HIGHLIGHT_TOGGLE
),
• thepageyouwanttolinkto,
• adestination.
Once you have an instance of
PdfAnnotation
, you can add it to a specific page using the
addAnnotation()
method.
¹⁰⁶
http://stackoverflow.com/questions/22194844/inserting-a-linked-rectangle-with-itext
¹⁰⁷
http://stackoverflow.com/users/363429/hans-stricker
¹⁰⁸
http://itextpdf.com/sandbox/annotations/AddLinkAnnotation
Actionsandannotations
61
How to add a maps with a pointer to a PDF?
IamusingjavaandiTexttocreateapdf.Isitpossibletoaddamapwithapointeronitso
theuserwillknowwherethestartingpointis?
PostedonStackOverflowonNov6,2014¹⁰⁹byuser2487493¹¹⁰
Whatdoyoumeanby“amapwithapointersotheuserknowswherethestartingpointis”?Ifyou
haveamapinyourPDF,youcouldaddanannotationthatlookslikeanarrow.Isthatwhatyou’re
lookingfor?
Sinceyoudidn’tanswermycounter-questionaddedincomment,I’mproviding two examples. If
thesearenotwhatyou’relookingfor,youreallyshouldclarifyyourquestion.
Example1:addacustomshapeasextracontentontopofamap
ThisisdemonstratedintheAddPointer¹¹¹example:
PdfContentByte canvas = writer.getDirectContent();
canvas.setColorStroke(BaseColor.RED);
canvas.setLineWidth(3);
canvas.moveTo(220, 330);
canvas.lineTo(240, 370);
canvas.arc(200, 350, 240, 390, , 0, , (float) 180);
canvas.lineTo(220, 330);
canvas.closePathStroke();
canvas.setColorFill(BaseColor.RED);
canvas.circle(220, 370, 10);
canvas.fill();
Ifweknow thecoordinatesofthepointer, wecan draw linesandcurvesthatresultina thered
pointershownhere(seetheredpinneartheCambridgeInnovationCenter):
¹⁰⁹
http://stackoverflow.com/questions/26752663/adding-maps-at-itext-java
¹¹⁰
http://stackoverflow.com/users/2487493/user2487493
¹¹¹
http://itextpdf.com/sandbox/objects/AddPointer
Actionsandannotations
62
Mapwithapin
Example2:addalineannotationontopofamap
ThisisdemonstratedintheAddPointerAnnotation¹¹²example:
Rectangle rect new Rectangle(220, 350, 475, 595);
PdfAnnotation annotation = PdfAnnotation.createLine(writer, rect,
"Cambridge Innovation Center", 225, 355, 470, 590);
PdfArray le new PdfArray();
le.add(new PdfName("OpenArrow"));
le.add(new PdfName("None"));
annotation.setTitle("You are here:");
annotation.setColor(BaseColor.RED);
annotation.setFlags(PdfAnnotation.FLAGS_PRINT);
annotation.setBorderStyle(
new PdfBorderDictionary(5, PdfBorderDictionary.STYLE_SOLID));
annotation.put(new PdfName("LE"), le);
annotation.put(new PdfName("IT"), new PdfName("LineArrow"));
writer.addAnnotation(annotation);
Theresultisanannotation(whichisn’tpartoftherealcontent,butpartofaninteractivelayeron
topoftherealcontent):
¹¹²
http://itextpdf.com/sandbox/annotations/AddPointerAnnotation
Actionsandannotations
63
Mapwithanannotation
Itisinteractiveinthesensethatextrainfoisshownwhentheuserclickstheannotation:
Mapwithanannotationthathasbeenopened
Manyotheroptionsarepossible,butonceagain:yourquestionwasn’tentirelyclear.
Extracting text from PDFs
iTextcanparsePDFstoextractthecontentofapage.Astherearemanydifferentwaystocreatea
PDFfile,andasthetextonapageusuallyisn’tmorethanabunchofcharactersdrawnonapage,
it’snottrivialtoextracttextcorrectly.
How to read text from aspecificposition?
IhaveaproblemusingiTextSharpwhenreadingdatafromPDFFile.WhatIwanttoachieve
istoreadonlyspecificpartofPDFpage(IwanttoonlyretrieveAddressInformation,which
islocatedatconstantposition).IhaveseenusingiTextSharpforreadingallpagessuchas
following:
StringBuilder text = new StringBuilder();
if (File.Exists(fileName)) {
PdfReader pdfReader = new PdfReader(fileName);
for (int page = 1; page <= pdfReader.NumberOfPages; page++) {
ITextExtractionStrategy strategy = new SimpleTextExtractionStrategy();
string currentText = = PdfTextExtractor.GetTextFromPage(pdfReader, page, , \
strategy);
currentText = Encoding.UTF8.GetString(ASCIIEncoding.Convert(Encoding.De\
fault, Encoding.UTF8, Encoding.Default.GetBytes(currentText)));
text.Append(currentText);
}
pdfReader.Close();
}
return text.ToString();
ButhowcanIonlyrestrictittoaspecificlocation?
PostedonStackOverflowonJun12,2014¹¹³byRobertJ.¹¹⁴
Youareusinga
SimpleTextExtractionStrategy
insteadofa
LocationTextExtractionStrategy
.If
rect
isarectanglebasedonthecoordinatesofyouraddress,youneed:
¹¹³
http://stackoverflow.com/questions/24185066/itextsharp-read-from-specific-position
¹¹⁴
http://stackoverflow.com/users/1539189/robert-j
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