How to open PDF from memory using iTextsharp in Windows Application

To open a PDF from memory using iTextSharp in a Windows Application, you can follow these steps:

1. Add iTextSharp Library: First, make sure you have the iTextSharp library added to your project. You can add it via NuGet or by manually referencing the library.

2. Load PDF from Memory Stream: You need to create a MemoryStream object containing the PDF data and then open it using iTextSharp's PdfReader class. Here's how you can do it:

csharpCopy code
using System.IO;

using iTextSharp.text.pdf;

using iTextSharp.text.pdf.parser;



namespace PdfMemoryOpen

{

    class Program

    {

        static void Main(string[] args)

        {

            // Load your PDF content into a byte array or MemoryStream

            byte[] pdfData = File.ReadAllBytes("path_to_your_pdf.pdf");

            MemoryStream memoryStream = new MemoryStream(pdfData);



            // Open the PDF using PdfReader

            PdfReader pdfReader = new PdfReader(memoryStream);



            // Access PDF content using PdfTextExtractor or other methods

            for (int pageNumber = 1; pageNumber <= pdfReader.NumberOfPages; pageNumber++)

            {

                string pageText = PdfTextExtractor.GetTextFromPage(pdfReader, pageNumber);

                Console.WriteLine(pageText);

            }



            // Close the PdfReader and MemoryStream

            pdfReader.Close();

            memoryStream.Close();



            Console.ReadLine();

        }

    }

}

In this example, replace "path_to_your_pdf.pdf" with the actual path to your PDF file. The code reads the PDF content into a MemoryStream, then uses PdfTextExtractor.GetTextFromPage to extract text from each page of the PDF. Adjust the extraction method as needed for your use case.

Remember that iTextSharp is an older library and is no longer actively maintained. Consider using newer alternatives like iText 7 or PdfSharp for better support and features.

Ensure that you have the required iTextSharp libraries properly referenced in your project for this code to work.

Note: The code provided is for demonstration purposes. Depending on your specific needs and the complexity of your PDF, you may need to adjust the code accordingly.