How to Read Barcodes and QR Codes

using IronOcr;
using System;

// This code snippet demonstrates how to use IronTesseract to perform Optical Character Recognition (OCR)
// on a PDF document and extract text along with any barcodes present.

// Instantiate IronTesseract for performing OCR
IronTesseract ocrTesseract = new IronTesseract();

// Enable barcode reading in the configuration
ocrTesseract.Configuration.ReadBarCodes = true;

// Load the PDF document that contains text and potentially barcodes.
// It's important to dispose of OcrPdfInput after use, hence the use of 'using'.
using (var pdfInput = new OcrPdfInput("pdfWithBarcodes.pdf"))
{
    // Perform OCR on the PDF input
    OcrResult ocrResult = ocrTesseract.Read(pdfInput);

    // Output the extracted text from the PDF
    Console.WriteLine("Extracted text:");
    Console.WriteLine(ocrResult.Text);

    // Output all detected barcodes in the PDF
    Console.WriteLine("Extracted barcodes:");
    foreach (var barcode in ocrResult.Barcodes)
    {
        Console.WriteLine(barcode.Value);
    }
}

Imports IronOcr

Imports System



' This code snippet demonstrates how to use IronTesseract to perform Optical Character Recognition (OCR)

' on a PDF document and extract text along with any barcodes present.



' Instantiate IronTesseract for performing OCR

Private ocrTesseract As New IronTesseract()



' Enable barcode reading in the configuration

ocrTesseract.Configuration.ReadBarCodes = True



' Load the PDF document that contains text and potentially barcodes.

' It's important to dispose of OcrPdfInput after use, hence the use of 'using'.

Using pdfInput = New OcrPdfInput("pdfWithBarcodes.pdf")

	' Perform OCR on the PDF input

	Dim ocrResult As OcrResult = ocrTesseract.Read(pdfInput)



	' Output the extracted text from the PDF

	Console.WriteLine("Extracted text:")

	Console.WriteLine(ocrResult.Text)



	' Output all detected barcodes in the PDF

	Console.WriteLine("Extracted barcodes:")

	For Each barcode In ocrResult.Barcodes

		Console.WriteLine(barcode.Value)

	Next barcode

End Using

using IronOcr;
using System;

// The IronTesseract class is part of the IronOcr library which provides OCR capabilities.
// This code demonstrates how to use IronTesseract to read text and barcodes from a PDF file.

class Program
{
    static void Main()
    {
        // Instantiate IronTesseract - this is the engine that performs the OCR operation.
        var ocrTesseract = new IronTesseract();

        // Enable barcode reading by modifying the Configuration property of the IronTesseract instance.
        // This allows the OCR engine to also detect and read barcodes in the PDF.
        ocrTesseract.Configuration.ReadBarCodes = true;

        // Define an input PDF file that contains QR codes or barcodes.
        // OcrPdfInput is a class that handles PDF requests for IronTesseract.
        using (var imageInput = new OcrPdfInput("pdfWithQrCodes.pdf"))
        {
            try
            {
                // Perform OCR on the provided PDF file.
                // This reads the text and barcodes from the PDF and stores the result in an OcrResult object.
                OcrResult ocrResult = ocrTesseract.Read(imageInput);

                // Output the extracted text from the PDF.
                Console.WriteLine("Extracted text:");
                Console.WriteLine(ocrResult.Text);

                // Output the barcodes detected in the PDF.
                Console.WriteLine("Extracted barcodes:");
                foreach (var barcode in ocrResult.Barcodes)
                {
                    // Each 'barcode' object contains properties such as 'Value' which represents the decoded barcode text.
                    Console.WriteLine(barcode.Value);
                }
            }
            catch (Exception ex)
            {
                // If an error occurs during the OCR process, output the exception message.
                Console.WriteLine("Error during OCR process: " + ex.Message);
            }
        }
    }
}

Imports IronOcr

Imports System



' The IronTesseract class is part of the IronOcr library which provides OCR capabilities.

' This code demonstrates how to use IronTesseract to read text and barcodes from a PDF file.



Friend Class Program

	Shared Sub Main()

		' Instantiate IronTesseract - this is the engine that performs the OCR operation.

		Dim ocrTesseract = New IronTesseract()



		' Enable barcode reading by modifying the Configuration property of the IronTesseract instance.

		' This allows the OCR engine to also detect and read barcodes in the PDF.

		ocrTesseract.Configuration.ReadBarCodes = True



		' Define an input PDF file that contains QR codes or barcodes.

		' OcrPdfInput is a class that handles PDF requests for IronTesseract.

		Using imageInput = New OcrPdfInput("pdfWithQrCodes.pdf")

			Try

				' Perform OCR on the provided PDF file.

				' This reads the text and barcodes from the PDF and stores the result in an OcrResult object.

				Dim ocrResult As OcrResult = ocrTesseract.Read(imageInput)



				' Output the extracted text from the PDF.

				Console.WriteLine("Extracted text:")

				Console.WriteLine(ocrResult.Text)



				' Output the barcodes detected in the PDF.

				Console.WriteLine("Extracted barcodes:")

				For Each barcode In ocrResult.Barcodes

					' Each 'barcode' object contains properties such as 'Value' which represents the decoded barcode text.

					Console.WriteLine(barcode.Value)

				Next barcode

			Catch ex As Exception

				' If an error occurs during the OCR process, output the exception message.

				Console.WriteLine("Error during OCR process: " & ex.Message)

			End Try

		End Using

	End Sub

End Class