Read barcodes from System.Drawing.Bitmap object

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Example: Here is an example that shows how to read barcodes from System.Drawing.Bitmap object.

VB.NET

Public Shared Sub ReadBarcodesFromImage(barcodeImage As Image)
        ' create barcode reader
        Using reader As New BarcodeReader()
                ' specify that reader must search for Code39, Code39Extended,
                ' Code128, SSCC18 and DataMatrix barcodes
                reader.Settings.ScanBarcodeTypes = BarcodeType.Code39 Or BarcodeType.Code128 Or BarcodeType.DataMatrix
                reader.Settings.ScanBarcodeSubsets.Add(BarcodeSymbologySubsets.Code39Extended)
                reader.Settings.ScanBarcodeSubsets.Add(BarcodeSymbologySubsets.SSCC18)

                ' specify that reader must search for horizontal and vertical barcodes only
                reader.Settings.ScanDirection = ScanDirection.Horizontal Or ScanDirection.Vertical

                ' use Automatic Recognition
                reader.Settings.AutomaticRecognition = True

                ' read barcodes from image
                Dim infos As IBarcodeInfo() = reader.ReadBarcodes(barcodeImage)

                ' if barcodes are not detected
                If infos.Length = 0 Then
                        Console.WriteLine("No barcodes found.")
                Else
                        ' if barcodes are detected
                        ' get information about extracted barcodes

                        Console.WriteLine(String.Format("{0} barcodes found:", infos.Length))
                        Console.WriteLine()
                        For i As Integer = 0 To infos.Length - 1
                                Dim info As IBarcodeInfo = infos(i)
                                Console.WriteLine(String.Format("[{0}:{1}]", i + 1, info.BarcodeType))
                                Console.WriteLine(String.Format("Value:      {0}", info.Value))
                                Console.WriteLine(String.Format("Region:     {0}", info.Region))
                                Console.WriteLine()
                        Next
                End If
        End Using
End Sub

// The project, which uses this code, must have references to the following assemblies:
// - Vintasoft.Barcode

/// <summary>
/// Reads barcode from an image.
/// </summary>
/// <param name="barcodeImage">An image with barcodes.</param>
public static void ReadBarcodesFromImage(System.Drawing.Image barcodeImage)
{
    // create barcode reader
    using (Vintasoft.Barcode.BarcodeReader reader = new Vintasoft.Barcode.BarcodeReader())
    {
        // specify that reader must search for Code39, Code39Extended,
        // Code128, SSCC18 and DataMatrix barcodes
        reader.Settings.ScanBarcodeTypes =
            Vintasoft.Barcode.BarcodeType.Code39 |
            Vintasoft.Barcode.BarcodeType.Code128 |
            Vintasoft.Barcode.BarcodeType.DataMatrix;
        reader.Settings.ScanBarcodeSubsets.Add(Vintasoft.Barcode.SymbologySubsets.BarcodeSymbologySubsets.Code39Extended);
        reader.Settings.ScanBarcodeSubsets.Add(Vintasoft.Barcode.SymbologySubsets.BarcodeSymbologySubsets.SSCC18);

        // specify that reader must search for horizontal and vertical barcodes only
        reader.Settings.ScanDirection = Vintasoft.Barcode.ScanDirection.Horizontal | Vintasoft.Barcode.ScanDirection.Vertical;

        // use Automatic Recognition
        reader.Settings.AutomaticRecognition = true;

        // read barcodes from image
        Vintasoft.Barcode.IBarcodeInfo[] infos = reader.ReadBarcodes(barcodeImage);

        // if barcodes are not detected
        if (infos.Length == 0)
        {
            System.Console.WriteLine("No barcodes found.");
        }
        // if barcodes are detected
        else
        {
            // get information about extracted barcodes

            System.Console.WriteLine(string.Format("{0} barcodes found:", infos.Length));
            System.Console.WriteLine();
            for (int i = 0; i < infos.Length; i++)
            {
                Vintasoft.Barcode.IBarcodeInfo info = infos[i];
                System.Console.WriteLine(string.Format("[{0}:{1}]", i + 1, info.BarcodeType));
                System.Console.WriteLine(string.Format("Value:      {0}", info.Value));
                System.Console.WriteLine(string.Format("Region:     {0}", info.Region));
                System.Console.WriteLine();
            }
        }
    }
}

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