Imports System.Collections.Generic
Imports System.Drawing.Imaging
Imports System.IO
Imports System.Text
Imports Bytescout.PDFImageExtractor

Class Program
    Friend Shared Sub Main(args As String())
        Dim extractor As New ImageExtractor()
        Dim filenum As Integer = 1

        extractor.InputPdfFile = "example.pdf"

        If extractor.GetFirstImage() Then
            Do
                Dim filename As [String] = Path.GetTempPath() & "Image" & filenum & ".png"

                If Not extractor.SaveCurrentImageToFile(filename, ImageFormat.Png) Then
                    Console.WriteLine(extractor.ErrorMessage)
                Else
                    Console.WriteLine("Saved file """ & filename & """")
                End If

                filenum += 1
            Loop While extractor.GetNextImage()
        End If

        extractor.Dispose()

        Console.WriteLine()
        Console.WriteLine("Press any key to continue.")
        Console.ReadKey()
    End Sub
End Class

using System;
using System.Collections.Generic;
using System.Drawing.Imaging;
using System.IO;
using System.Text;
using Bytescout.PDFImageExtractor;

namespace PdfToPng
{
    class Program
    {
        static void Main(string[] args)
        {
            ImageExtractor extractor = new ImageExtractor();
            int filenum = 1;

            extractor.InputPdfFile = "example.pdf";
            
            if (extractor.GetFirstImage())
            {
                do
                {
                    //String filename = Path.GetTempPath() + "Image" + filenum + ".png";
                    String filename = "Image" + filenum + ".png";

                    if (!extractor.SaveCurrentImageToFile(filename, ImageFormat.Png))
                    {
                        Console.WriteLine(extractor.ErrorMessage);
                    }
                    else
                    {
                        Console.WriteLine("Saved file \"" + filename + "\"");
                    }
                    
                    filenum++;
                } 
                while (extractor.GetNextImage());
            }

            extractor.Dispose();

            Console.WriteLine();
            Console.WriteLine("Press any key to continue.");
            Console.ReadKey();
        }
    }
}

Imports System.Drawing
Imports Bytescout.BarCodeReader
Imports Bytescout.PDFImageExtractor

Class Program
    Friend Shared Sub Main(args As String())
        Dim extractor As New ImageExtractor()
        Dim barcodeReader As New Reader()
        Dim imgNum As Integer = 1

        extractor.InputPdfFile = "example.pdf"

        If extractor.GetFirstImage() Then
            Do
                Console.WriteLine("Reading barcode(s) from image #{0}", imgNum)

                Dim barcodes As FoundBarcode() = barcodeReader.ReadFrom(DirectCast(extractor.CurrentImage, Bitmap))

                For Each barcode As FoundBarcode In barcodes
                    Console.WriteLine("   Found barcode with type '{0}' and value '{1}'", barcode.Type, barcode.Value)
                Next

                imgNum += 1
            Loop While extractor.GetNextImage()
        End If

        extractor.Dispose()

        Console.WriteLine()
        Console.WriteLine("Press any key to continue.")
        Console.ReadKey()
    End Sub
End Class

using System;
using System.Drawing;
using Bytescout.BarCodeReader;
using Bytescout.PDFImageExtractor;

namespace BarcodesFromPDF
{
    class Program
    {
        static void Main(string[] args)
        {
            ImageExtractor extractor = new ImageExtractor();
            Reader barcodeReader = new Reader();
            int imgNum = 1;

            extractor.InputPdfFile = "example.pdf";

            if (extractor.GetFirstImage())
            {
                do
                {
                    Console.WriteLine("Reading barcode(s) from image #{0}", imgNum);

                    FoundBarcode[] barcodes = barcodeReader.ReadFrom((Bitmap) extractor.CurrentImage);

                    foreach (FoundBarcode barcode in barcodes)
                        Console.WriteLine("   Found barcode with type '{0}' and value '{1}'", barcode.Type, barcode.Value);

                    imgNum++;
                }
                while (extractor.GetNextImage());
            }

            extractor.Dispose();

            Console.WriteLine();
            Console.WriteLine("Press any key to continue.");
            Console.ReadKey();
        }
    }
}

Imports System
Imports System.Data
Imports System.Configuration
Imports System.Collections
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls
Imports System.Drawing
Imports System.Collections.Generic

Imports Bytescout.BarCodeReader

Partial Public Class _Default
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub

    Protected Sub UploadButton_Click(ByVal sender As Object, ByVal e As EventArgs)
        Dim savePath As String = "\uploads\"

        If FileUpload1.HasFile Then
            Dim fileName As String = FileUpload1.FileName
            savePath += fileName
            FileUpload1.SaveAs(Server.MapPath(savePath))

            Dim bitmap As Bitmap = Nothing
            Try
                bitmap = New Bitmap(FileUpload1.FileContent)
            Catch generatedExceptionName As System.Exception
            End Try

            If bitmap Is Nothing Then
                UploadStatusLabel.Visible = True
                UploadStatusLabel.Text = "Your file is not an image"
                Image1.Visible = False
                ListBox1.Visible = False
            Else
                UploadStatusLabel.Visible = False
                Image1.ImageUrl = savePath
                Image1.Visible = True
                ListBox1.Items.Clear()
                ListBox1.Visible = True
                findBarcodes(Server.MapPath(savePath))
                If ListBox1.Items.Count = 0 Then
                    ListBox1.Items.Add("No barcodes found")
                End If
            End If
        Else
            ' Notify the user that a file was not uploaded.
            UploadStatusLabel.Text = "You did not specify a file to upload."
        End If
    End Sub

    Private Sub findBarcodes(ByVal fileName As String)
        Dim reader As New Reader(fileName)
        For Each barcode As FoundBarcode In reader.FoundBarcodes
            ListBox1.Items.Add([String].Format("{0} : {1}", barcode.Type, barcode.Value))
        Next
    End Sub

End Class

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
using System.Collections.Generic;

using Bytescout.BarCodeReader;

namespace WebTestSharp
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void UploadButton_Click(object sender, EventArgs e)
        {
            String savePath = @"\uploads\";

            if (FileUpload1.HasFile)
            {
                String fileName = FileUpload1.FileName;
                savePath += fileName;
                FileUpload1.SaveAs(Server.MapPath(savePath));
                
                Bitmap bitmap = null;
                try
                {
                    bitmap = new Bitmap(FileUpload1.FileContent);
                }
                catch (System.Exception)
                {
                }

                if (bitmap == null)
                {
                    UploadStatusLabel.Visible = true;
                    UploadStatusLabel.Text = "Your file is not an image";
                    Image1.Visible = false;
                    ListBox1.Visible = false;
                }
                else
                {
                    UploadStatusLabel.Visible = false;
                    Image1.ImageUrl = savePath;
                    Image1.Visible = true;
                    ListBox1.Items.Clear();
                    ListBox1.Visible = true;
                    findBarcodes(Server.MapPath(savePath));
                    if (ListBox1.Items.Count == 0)
                        ListBox1.Items.Add("No barcodes found");
                }
            }
            else
            {
                // Notify the user that a file was not uploaded.
                UploadStatusLabel.Text = "You did not specify a file to upload.";
            }
        }

        private void findBarcodes(string fileName)
        {
            Reader reader = new Reader(fileName);
            foreach (FoundBarcode barcode in reader.FoundBarcodes)
                ListBox1.Items.Add(String.Format("{0} : {1}", barcode.Type, barcode.Value));
        }
    }
}