Imports Vintasoft.Imaging   
   
Imports Vintasoft.Barcode   
   
''' <summary>
''' Test that shows how to read barcodes from image-resources of PDF document.
''' </summary>
Class PdfImageViewerExample   
    ''' <summary>
    ''' Reads barcodes from image-resources of PDF document.
    ''' </summary>
    Public Shared Sub ReadBarcodesFromPdfDocument(filename As String, barcodeTypes As BarcodeType)   
        ' open PDF document
        Using pdfImageViewer As New PdfImageViewer(filename)   
            ' create the barcode reader
            Using reader As New BarcodeReader()   
                ' specify that reader must search barcodes of specified type(s)
                reader.Settings.ScanBarcodeTypes = barcodeTypes   
   
                ' for each page in PDF document
                For i As Integer = 0 To pdfImageViewer.PageCount - 1   
                    ' get an array of names of image resources from page i
                    Dim imageNames As String() = pdfImageViewer.GetImageNames(i)   
                    ' for each image resource of page i
                    For k As Integer = 0 To imageNames.Length - 1   
                        Console.WriteLine(String.Format("Page {0}, image {1}: ", i, imageNames(k)))   
                        Dim imageWithBarcode As VintasoftBitmap   
                        ' get image of image resource
                        Try   
                            imageWithBarcode = pdfImageViewer.GetImage(i, imageNames(k))   
                        Catch e As Exception   
                            ' not supported image format
                            Console.WriteLine(e.Message)   
                            Continue For   
                        End Try   
   
                        ' read barcodes from image-resource
                        Dim barcodesInfo As IBarcodeInfo() = reader.ReadBarcodes(imageWithBarcode)   
   
                        ' dispose image
                        imageWithBarcode.Dispose()   
   
                        ' show barcode recognition results
   
                        If barcodesInfo.Length = 0 Then   
                            Console.WriteLine("No barcodes found.")   
                        Else   
                            For j As Integer = 0 To barcodesInfo.Length - 1   
                                Console.WriteLine(String.Format("[{0}] {1}", barcodesInfo(j).BarcodeType, barcodesInfo(j).Value))   
                            Next   
                        End If   
                    Next   
                Next   
            End Using   
        End Using   
    End Sub   
End Class

using System;

using Vintasoft.Imaging;

using Vintasoft.Barcode;

/// <summary>
/// Test that shows how to read barcodes from image-resources of PDF document.
/// </summary>
class PdfImageViewerExample
{
    /// <summary>
    /// Reads barcodes from image-resources of PDF document.
    /// </summary>
    public static void ReadBarcodesFromPdfDocument(string filename, BarcodeType barcodeTypes)
    {
        // open PDF document
        using (PdfImageViewer pdfImageViewer = new PdfImageViewer(filename))
        {
            // create the barcode reader
            using (BarcodeReader reader = new BarcodeReader())
            {
                // specify that reader must search barcodes of specified type(s)
                reader.Settings.ScanBarcodeTypes = barcodeTypes;

                // for each page in PDF document
                for (int i = 0; i < pdfImageViewer.PageCount; i++)
                {
                    // get an array of names of image resources from page i
                    string[] imageNames = pdfImageViewer.GetImageNames(i);
                    // for each image resource of page i
                    for (int k = 0; k < imageNames.Length; k++)
                    {
                        Console.WriteLine(string.Format("Page {0}, image {1}: ", i, imageNames[k]));
                        VintasoftBitmap imageWithBarcode;
                        // get image of image resource
                        try
                        {
                            imageWithBarcode = pdfImageViewer.GetImage(i, imageNames[k]);
                        }
                        catch (Exception e)
                        {
                            // not supported image format
                            Console.WriteLine(e.Message);
                            continue;
                        }

                        // read barcodes from image-resource
                        IBarcodeInfo[] barcodesInfo = reader.ReadBarcodes(imageWithBarcode);

                        // dispose image
                        imageWithBarcode.Dispose();

                        // show barcode recognition results

                        if (barcodesInfo.Length == 0)
                        {
                            Console.WriteLine("No barcodes found.");
                        }
                        else
                        {
                            for (int j = 0; j < barcodesInfo.Length; j++)
                                Console.WriteLine(string.Format("[{0}] {1}",
                                    barcodesInfo[j].BarcodeType, barcodesInfo[j].Value));
                        }
                    }
                }
            }
        }
    }
}