How to Read Barcode from PDF Documents?

This article shows how to use VeryPDF Barcode Recognition SDK to recognize barcodes from PDF documents.

http://www.verypdf.com/app/barcode/barcode-recognition.html

Recognizing Barcodes from PDF Files, Extract Images from PDF Document and Read Barcodes.

  • Extract images from the PDF document using VeryPDF Barcode Recognition SDK.
  • Pass the images to VeryPDF Barcode Recognition SDK for barcode recognition.

image

Below is a complete C# program that generates and recognizes barcodes from Adobe PDF documents,

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using VeryPDF;
using System.IO;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string appPath = Path.GetDirectoryName(Application.ExecutablePath);
            {
                System.Type VeryPDFType =
                        System.Type.GetTypeFromProgID("VeryPDF.BarcodeCom");
                VeryPDF.BarcodeCom VeryPDFCom = (VeryPDF.BarcodeCom)
                        System.Activator.CreateInstance(VeryPDFType);

                string appFolder = Path.GetDirectoryName(Application.ExecutablePath);
                string strFolder = appFolder;

                string strReturn = "";
                int nFileIndex = 0;
                VeryPDFCom.EnableDebugLog(true);

                string strBarcodeFile = strFolder + "\\barcode.pdf";
                string strCmd = "-$ XXXXXXXXXXXXXXXXXX -decode \""
                           + strBarcodeFile + "\"";
                strReturn += VeryPDFCom.GenerateBarcode(strCmd);
                nFileIndex = nFileIndex + 1;

                MessageBox.Show(strReturn);
            }
        }
    }
}

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