How do I create new PDF file every time i iterate or loop through the documents list?

Question

I am new to PDF creation and I am following the existing code to create a pdf file. I am amending the existing code by creating a new pdf.

From the list of the documents, I am looping through each document and give it a new name.

How do I create a new PDF file every time I iterate or loop through the documents list?

resultCollection - Got the list of the documents

currentCompanySegmentsSetings - An object with the details

creatingTableOfContent - table content

What I have tried

foreach (var item in resultCollection)
                {
                    var guidID = Guid.NewGuid().ToString();
                    var newFileName = $"{currentCompanySegmentsSetings.FriendlySegmentName}-{Translator.TranslateDocumentType("invoice", currentCompanySegmentsSetings).ToLower()}-{guidID}-{message.documents.First().AccountNumber}.pdf";
                    outputFileNames.Add(newFileName);

                    //Create PDF's and send to the location
                    System.IO.Directory.CreateDirectory(currentOutputDirectory);
                    var firstDocsMetadata = resultCollection.First().MetaData;
                    string generatedPDFLocation = System.IO.Path.Combine(currentOutputDirectory, newFileName);

                    var file = DocumentsToPDFDocs(financialDocument);
                    PdfDocument pdfDoc = new PdfDocument(new PdfWriter(generatedPDFLocation, CreateEncryptionWriteProperties()));
                    Document doc = new Document(pdfDoc);

                    //Bookmarks 
                    pdfDoc.GetCatalog().SetPageMode(PdfName.UseOutlines);
                    doc.SetMargins(22f, 22f, 22f, 22f);
                    doc.SetFontSize(8);
                    doc.SetFontColor(Color.BLACK);

                    //1.Create table of contents 
                    var tableOfContentTopMargin = 176;
                    Table tableOfContent = creatingTableOfContent(file, currentCompanySegmentsSetings);
                    tableOfContent.SetDestination("p" + "index");
                    doc.Add(tableOfContent.SetMarginTop(tableOfContentTopMargin));

                    //How do i continue from here to create pdf to the directory

                    message.FinancialDocumentAttachments.Add(new MessageQueueAttachment()
                    {
                        Location = documentPath,
                        IsNew = true,
                        Id = Guid.NewGuid()
                    });
                }

Answer 1

I assume you want to create a separate PDF file for each item in resultCollection .

You already generate a filename for each file:

var newFileName = ...
string generatedPDFLocation = System.IO.Path.Combine(currentOutputDirectory, newFileName);

And you make a new PdfDocument and Document instance, to be written to a file with that filename:

PdfDocument pdfDoc = new PdfDocument(new PdfWriter(generatedPDFLocation,
    CreateEncryptionWriteProperties()));
Document doc = new Document(pdfDoc);

Then just add content to the Document instance (or to the PdfDocument ). I assume that content is in the item or resultCollection somehow.

doc.add(new Paragraph("content for this document"));

Finally, close the document which will flush the PDF file to disk.

doc.close();

The next iteration of the foreach loop will generate a different filename and thus the next document will be written to a different file.

Answer 2

You're using:

var firstDocsMetadata = resultCollection.First().MetaData;

When it should be:

var firstDocsMetadata = item.MetaData;

Since you're iterating the resultCollection and item is the element that is obtained in each loop.