ITEXT 7 - Doument Add method throws exception while on adding Paragraph object in .Net Core [duplicate]

Question

I tried to generate a simple PDF using ITEXT 7 package. I just copy the source code from the documentation page and tried to run the .Net Core Console Application. It throws an exception. I'm not sure what I missed. I tried a lot to fix the issue but failed.

Package Info: Name: itext7 Version: 7.1.16

Exception Message:

Ex Message "Object reference not set to an instance of an object." string

ITEXT Documentation: https://itextpdf.com/en/products/itext-7/itext-7-core

class Program { static void Main(string[] args) { PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new FileStream("G:/hello.pdf", FileMode.Create, FileAccess.Write))); Document document = new Document(pdfDocument, iText.Kernel.Geom.PageSize.A4); String line = "Hello! Welcome to iTextPdf"; var para = new Paragraph(line); document.Add(new Paragraph(line)); document.Close(); Console.WriteLine("Awesome PDF just got created."); Console.WriteLine("Hello World!"); } }

Hi, something's wrong with the dependencies/fonts, so definitely not a problem with code but rather something with the project set up. Can you attach your project file please? — Alexey Subach
– Alexey Subach, Commented Oct 1, 2021 at 20:15

Matjaz · Accepted Answer · 2023-06-11 18:32:18Z

A little bit late, but anyhow.

This is a known iText problem, and you can find a solution in this thread: Null Reference Exception when calling iText7 PdfAcroForm.GetAcroForm() in .Net Core 3.1 class library

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