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MultiTheading My task is stuck (Infinite loop) and it has taken up all the available RAM by the code below

My task is stuck and it has taken up all the available RAM by the code below after being called several times and running the requested tasks without any problems.
Document document = new Document();
using (FileStream newFileStream = new FileStream(tempFile, FileMode.Create, FileAccess.ReadWrite))
{
PdfCopy writer = new PdfCopy(document, newFileStream);
document.Open();
foreach (var page in pages)
{
PdfReader reader = new PdfReader(Path.Combine(pdfInputPath, page.PdfFileName));
reader.ConsolidateNamedDestinations();
PdfImportedPage importedPage = writer.GetImportedPage(reader, page.Page);
writer.AddPage(importedPage);
reader.Close();
}
writer.Close();
document.Close();
}
what can cause an infinite loop in this piece of code?
and this piece of code also caused an infinite loop
var reader = new PdfReader(pdfFile);
using (var outputPdfStream = new FileStream(finalPDFPath, FileMode.Create, FileAccess.Write, FileShare.None))
{
var stamper = new PdfStamper(reader, outputPdfStream);
int i = 1;
foreach (var page in pages)
{
var pdfContentByte = stamper.GetOverContent(i++);
string value = GetValue();
if (!string.IsNullOrEmpty(value))
{
var img = GetPage(Information, page, layout, pdfContentByte, value, X_DPI, Y_DPI);
//var img = ImgRender(Information, page);
pdfContentByte.AddImage(img);
pdfContentByte.ClosePath();
}
}
logger.Info("Number of pages after generation :" + reader.NumberOfPages);
stamper.Close();
reader.Close();
}

Grab all of the pages of a PDF using textsharp

I am getting a pfd using the older version of itextsharp with this code
string Oldfile = #"C:/test.pdf"; // Gets the Template
(new FileInfo("C:/C:/test.pdf")).Directory.Create(); // Go create this folder if it's not there
string NewFile = "C:/test.pdf";
PdfReader reader = new PdfReader(Oldfile);
iTextSharp.text.Rectangle Size = reader.GetPageSizeWithRotation(1);
Document document = new Document(Size);
// MemoryStream memory_stream = new MemoryStream();
FileStream fs = new FileStream(NewFile, FileMode.Create, FileAccess.Write);
PdfWriter weiter = PdfWriter.GetInstance(document, fs);
document.Open();
PdfContentByte cb = weiter.DirectContent;
PdfImportedPage page = weiter.GetImportedPage(reader, 1);
//PdfImportedPage page2 = weiter.GetImportedPage(reader, 2);
cb.AddTemplate(page, 0, 0);
The problem I am having is when it gets that file it has 2 pages in that pdf but it only gets the 1st page and adds lines and saves the only 1st page of the pdf I want to be able to grab both of them or is there a way to merge them after wards

I bet you need to iterate all pages.
using System;
using System.IO;
using System.Collections.Generic;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace TestAnything
{
class Program
{
static void Main(string[] args)
{
List<string> filesToMerge = new List<string> { #"c:\temp\1.pdf", #"c:\temp\2.pdf" };
FileInfo destinationFile = new FileInfo(#"c:\temp\merge.pdf");
if (File.Exists(destinationFile.FullName))
File.Delete(destinationFile.FullName);
MergeFiles(filesToMerge, destinationFile);
}
public static void MergeFiles(List<string> sourceFiles, FileInfo destinationFile)
{
if (sourceFiles == null || sourceFiles.Count == 0)
throw new ArgumentNullException("blahhh.");
PdfReader reader = new PdfReader(sourceFiles[0]);
Document document = new Document(reader.GetPageSizeWithRotation(1));
PdfCopy writer = new PdfCopy(document, new FileStream(destinationFile.FullName, FileMode.Create));
document.Open();
try
{
foreach (string sourceFile in sourceFiles)
{
reader = new PdfReader(sourceFile);
reader.ConsolidateNamedDestinations();
for (int x = 1; x <= reader.NumberOfPages; x++)
writer.AddPage(writer.GetImportedPage(reader, x));
PRAcroForm form = reader.AcroForm;
if (form != null)
writer.CopyAcroForm(reader);
}
}
finally
{
if (document.IsOpen())
document.Close();
}
}
}
}

Save image in Existing PDF using iTextSharp. Not Working

I am using the below mentioned code. Due to some reasons I am not able to save the image in output PDF. is there anything I am missing ?
string imageFileName = Path.Combine(Application.StartupPath, "a.jpg");
var inputpdf = Path.Combine(Application.StartupPath, "b.pdf");
var outputpdf = Path.Combine(Application.StartupPath, "output.pdf");
using (Stream inputPdfStream = new FileStream(inputpdf, FileMode.Open, FileAccess.Read,
FileShare.Read))
{
using (Stream inputImageStream = new FileStream(imageFileName, FileMode.Open,
FileAccess.Read, FileShare.Read))
{
var reader = new PdfReader(inputPdfStream);
var stamper = new PdfStamper(reader, new FileStream(outputpdf, FileMode.Create),
'\0', true);
var pdfContentByte = stamper.GetOverContent(1);
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(inputImageStream);
image.SetAbsolutePosition(10, 10);
pdfContentByte.AddImage(image);
stamper.Close();
}
}

Crop Pdf from each edge using itextshap

I am trying to crop pdf 5 mm from every edge i.e top,bottom,right and left. I tried with below code
public void TrimPdf(string sourceFilePath, string outputFilePath)
{
PdfReader pdfReader = new PdfReader(sourceFilePath);
float widthTo_Trim = iTextSharp.text.Utilities.MillimetersToPoints(5);
using (FileStream output = new FileStream(outputFilePath, FileMode.Create, FileAccess.Write))
using (PdfStamper pdfStamper = new PdfStamper(pdfReader, output))
{
for (int page = 1; page <= pdfReader.NumberOfPages; page++)
{
Rectangle cropBox = pdfReader.GetCropBox(page);
cropBox.Left += widthTo_Trim;
cropBox.Right += widthTo_Trim;
cropBox.Top += widthTo_Trim;
cropBox.Bottom += widthTo_Trim;
pdfReader.GetPageN(page).Put(PdfName.CROPBOX, new PdfRectangle(cropBox));
}
}
}
By using this code i am Able to Crop only Left and Bottom part. unable to crop top and right side
How can i get desire result ?

This solved my problem by using Below code
public void TrimLeftandRightFoall(string sourceFilePath, string outputFilePath, float cropwidth)
{
PdfReader pdfReader = new PdfReader(sourceFilePath);
float width = (float)GetPDFwidth(sourceFilePath);
float height = (float)GetPDFHeight(sourceFilePath);
float widthTo_Trim = iTextSharp.text.Utilities.MillimetersToPoints(cropwidth);
PdfRectangle rectLeftside = new PdfRectangle(widthTo_Trim, widthTo_Trim, width-widthTo_Trim , height-widthTo_Trim);
using (var output = new FileStream(outputFilePath, FileMode.CreateNew, FileAccess.Write))
{
// Create a new document
Document doc = new Document();
// Make a copy of the document
PdfSmartCopy smartCopy = new PdfSmartCopy(doc, output);
// Open the newly created document
doc.Open();
// Loop through all pages of the source document
for (int i = 1; i <= pdfReader.NumberOfPages; i++)
{
// Get a page
var page = pdfReader.GetPageN(i);
page.Put(PdfName.MEDIABOX, rectLeftside);
var copiedPage = smartCopy.GetImportedPage(pdfReader, i);
smartCopy.AddPage(copiedPage);
}
doc.Close();
}
}

Removing Watermark from a PDF

I had been used the first code create a water mark and removed and it work perfect
private void Form1_Load(object sender, EventArgs e) {
string workingFolder = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string startFile = Path.Combine(workingFolder, "StartFile.pdf");
string watermarkedFile = Path.Combine(workingFolder, "Watermarked.pdf");
string unwatermarkedFile = Path.Combine(workingFolder, "Un-watermarked.pdf");
string watermarkText = "This is a test";
//SECTION 1
//Create a 5 page PDF, nothing special here
using (FileStream fs = new FileStream(startFile, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (Document doc = new Document(PageSize.LETTER)) {
using (PdfWriter witier = PdfWriter.GetInstance(doc, fs)) {
doc.Open();
for (int i = 1; i <= 5; i++) {
doc.NewPage();
doc.Add(new Paragraph(String.Format("This is page {0}", i)));
}
doc.Close();
}
}
}
//SECTION 2
//Create our watermark on a separate layer. The only different here is that we are adding the watermark to a PdfLayer which is an OCG or Optional Content Group
PdfReader reader1 = new PdfReader(startFile);
using (FileStream fs = new FileStream(watermarkedFile, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (PdfStamper stamper = new PdfStamper(reader1, fs)) {
int pageCount1 = reader1.NumberOfPages;
//Create a new layer
PdfLayer layer = new PdfLayer("WatermarkLayer", stamper.Writer);
for (int i = 1; i <= pageCount1; i++) {
iTextSharp.text.Rectangle rect = reader1.GetPageSize(i);
//Get the ContentByte object
PdfContentByte cb = stamper.GetUnderContent(i);
//Tell the CB that the next commands should be "bound" to this new layer
cb.BeginLayer(layer);
cb.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 50);
PdfGState gState = new PdfGState();
gState.FillOpacity = 0.25f;
cb.SetGState(gState);
cb.SetColorFill(BaseColor.BLACK);
cb.BeginText();
cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, watermarkText, rect.Width / 2, rect.Height / 2, 45f);
cb.EndText();
//"Close" the layer
cb.EndLayer();
}
}
}
//SECTION 3
//Remove the layer created above
//First we bind a reader to the watermarked file, then strip out a bunch of things, and finally use a simple stamper to write out the edited reader
PdfReader reader2 = new PdfReader(watermarkedFile);
//NOTE, This will destroy all layers in the document, only use if you don't have additional layers
//Remove the OCG group completely from the document.
//reader2.Catalog.Remove(PdfName.OCPROPERTIES);
//Clean up the reader, optional
reader2.RemoveUnusedObjects();
//Placeholder variables
PRStream stream;
String content;
PdfDictionary page;
PdfArray contentarray;
//Get the page count
int pageCount2 = reader2.NumberOfPages;
//Loop through each page
for (int i = 1; i <= pageCount2; i++) {
//Get the page
page = reader2.GetPageN(i);
//Get the raw content
contentarray = page.GetAsArray(PdfName.CONTENTS);
if (contentarray != null) {
//Loop through content
for (int j = 0; j < contentarray.Size; j++) {
//Get the raw byte stream
stream = (PRStream)contentarray.GetAsStream(j);
//Convert to a string. NOTE, you might need a different encoding here
content = System.Text.Encoding.ASCII.GetString(PdfReader.GetStreamBytes(stream));
//Look for the OCG token in the stream as well as our watermarked text
if (content.IndexOf("/OC") >= 0 && content.IndexOf(watermarkText) >= 0) {
//Remove it by giving it zero length and zero data
stream.Put(PdfName.LENGTH, new PdfNumber(0));
stream.SetData(new byte[0]);
}
}
}
}
//Write the content out
using (FileStream fs = new FileStream(unwatermarkedFile, FileMode.Create, FileAccess.Write, FileShare.None)) {
using (PdfStamper stamper = new PdfStamper(reader2, fs)) {
}
}
this.Close();
}
}
}
but when I used digital sign some time when a I tried to remove the watermark some page lost the information , them I'm would like to used the PdfLayerRemover and I change to C# but when I made this
PdfDictionary ocProps = _reader.Catalog.GetAsDict(PdfName.OCPROPERTIES);
I had been used the first code create a water mark and removed and it work perfect but when I used digital sign some time when a I tried to remove the watermark some page lost the information , them I'm would like to used the PdfLayerRemover and I change to C# but when I made this
PdfDictionary ocProps = _reader.Catalog.GetAsDict(PdfName.OCPROPERTIES);
always get null value and the pdf has the watermark??? please if can help me and the pdf has ocpproperties because when I use this works but it remove additional information . but the way Itextshap version 5.5.2.0
if (content.IndexOf("/OC") >= 0 && content.IndexOf(watermarkText) >= 0) {
//Remove it by giving it zero length and zero data
stream.Put(PdfName.LENGTH, new PdfNumber(0));
stream.SetData(new byte[0]);
}