Class BarCodeReader

Class BarCodeReader

Namespace: Aspose.BarCode.BarCodeRecognition
Assembly: Aspose.BarCode.dll (25.2.0)

BarCodeReader encapsulates an image which may contain one or several barcodes, it then can perform ReadBarCodes operation to detect barcodes.

[XmlSerialization(Name = "Aspose.BarCode.Reader.Properties")]
public class BarCodeReader : IDisposable

Inheritance

object ← BarCodeReader

Implements

IDisposable

Inherited Members

object.GetType(), object.MemberwiseClone(), object.ToString(), object.Equals(object?), object.Equals(object?, object?), object.ReferenceEquals(object?, object?), object.GetHashCode()

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

Constructors

BarCodeReader()

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class with default values. Requires to set image (SetBitmapImage()) before to call ReadBarCodes() method.

public BarCodeReader()

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader())
{
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128);
    reader.SetBarCodeImage(@"c:\test.png");
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader()
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128)
    reader.SetBarCodeImage("c:\test.png")
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

BarCodeReader(Bitmap) 

public BarCodeReader(Bitmap image)

Parameters

image Bitmap

BarCodeReader(Bitmap, params BaseDecodeType[]) 

public BarCodeReader(Bitmap image, params BaseDecodeType[] decodeTypes)

Parameters

image Bitmap

decodeTypes BaseDecodeType[]

BarCodeReader(Bitmap, BaseDecodeType) 

public BarCodeReader(Bitmap image, BaseDecodeType type)

Parameters

image Bitmap

type BaseDecodeType

BarCodeReader(Bitmap, Rectangle, params BaseDecodeType[]) 

public BarCodeReader(Bitmap image, Rectangle area, params BaseDecodeType[] decodeTypes)

Parameters

image Bitmap

area Rectangle

decodeTypes BaseDecodeType[]

BarCodeReader(Bitmap, Rectangle, BaseDecodeType) 

public BarCodeReader(Bitmap image, Rectangle area, BaseDecodeType type)

Parameters

image Bitmap

area Rectangle

type BaseDecodeType

BarCodeReader(Bitmap, Rectangle[], params BaseDecodeType[]) 

public BarCodeReader(Bitmap image, Rectangle[] areas, params BaseDecodeType[] decodeTypes)

Parameters

image Bitmap

areas Rectangle[]

decodeTypes BaseDecodeType[]

BarCodeReader(Bitmap, Rectangle[], BaseDecodeType) 

public BarCodeReader(Bitmap image, Rectangle[] areas, BaseDecodeType type)

Parameters

image Bitmap

areas Rectangle[]

type BaseDecodeType

BarCodeReader(string)

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class from file.

public BarCodeReader(string filename)

Parameters

filename string

The filename.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png"))
{
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128);
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader("c:\test.png")
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128)
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

BarCodeReader(string, params BaseDecodeType[])

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class.

public BarCodeReader(string filename, params BaseDecodeType[] decodeTypes)

Parameters

filename string

The filename.

decodeTypes BaseDecodeType[]

Decode types.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

BarCodeReader(string, BaseDecodeType)

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class.

public BarCodeReader(string filename, BaseDecodeType type)

Parameters

filename string

The filename.

type BaseDecodeType

The decode type.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", new MultyDecodeType(DecodeType.Code39, DecodeType.Code128)))
{
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader("c:\test.png", New MultyDecodeType(DecodeType.Code39, DecodeType.Code128))
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

BarCodeReader(Stream)

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class.

public BarCodeReader(Stream stream)

Parameters

stream Stream

The stream.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (FileStream fstr = new FileStream(@"c:\test.png", FileMode.Open))
using (BarCodeReader reader = new BarCodeReader(fstr))
{
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128);
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using fstr = New FileStream("c:\test.png", FileMode.Open)
    Using reader As New BarCodeReader(fstr)
        reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128)
        For Each result As BarCodeResult In reader.ReadBarCodes()
            Console.WriteLine("BarCode Type: " + result.CodeTypeName)
            Console.WriteLine("BarCode CodeText: " + result.CodeText)
        Next
    End Using
End Using

BarCodeReader(Stream, BaseDecodeType)

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class.

public BarCodeReader(Stream stream, BaseDecodeType type)

Parameters

stream Stream

The stream.

type BaseDecodeType

The decode type.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (FileStream fstr = new FileStream(@"c:\test.png", FileMode.Open))
using (BarCodeReader reader = new BarCodeReader(fstr, new MultyDecodeType(DecodeType.Code39, DecodeType.Code128)))
{
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using fstr = New FileStream("c:\test.png", FileMode.Open)
    Using reader As New BarCodeReader(fstr, New MultyDecodeType(DecodeType.Code39, DecodeType.Code128))
        For Each result As BarCodeResult In reader.ReadBarCodes()
            Console.WriteLine("BarCode Type: " + result.CodeTypeName)
            Console.WriteLine("BarCode CodeText: " + result.CodeText)
        Next
    End Using
End Using

BarCodeReader(Stream, params BaseDecodeType[])

Initializes a new instance of the Aspose.BarCode.BarCodeRecognition.BarCodeReader class.

public BarCodeReader(Stream stream, params BaseDecodeType[] decodeTypes)

Parameters

stream Stream

The stream.

decodeTypes BaseDecodeType[]

Decode types.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (FileStream fstr = new FileStream(@"c:\test.png", FileMode.Open))
using (BarCodeReader reader = new BarCodeReader(fstr, DecodeType.Code39, DecodeType.Code128))
{
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using fstr = New FileStream("c:\test.png", FileMode.Open)
    Using reader As New BarCodeReader(fstr, DecodeType.Code39, DecodeType.Code128)
        For Each result As BarCodeResult In reader.ReadBarCodes()
            Console.WriteLine("BarCode Type: " + result.CodeTypeName)
            Console.WriteLine("BarCode CodeText: " + result.CodeText)
        Next
    End Using
End Using

Properties

BarcodeSettings

The main BarCode decoding parameters. Contains parameters which make influence on recognized data.

[XmlSerialization(Type = XmlSerializationType.Element)]
public BarcodeSettings BarcodeSettings { get; }

Property Value

BarcodeSettings

FoundBarCodes

Gets recognized Aspose.BarCode.BarCodeRecognition.BarCodeResults array

public BarCodeResult[] FoundBarCodes { get; }

Property Value

BarCodeResult[]

Examples

This sample shows how to read barcodes with BarCodeReader

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
    reader.ReadBarCodes();
    for(int i = 0; reader.FoundCount > i; ++i)
        Console.WriteLine("BarCode CodeText: " + reader.FoundBarCodes[i].CodeText);
}
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    reader.ReadBarCodes()
    For i As Integer = 0 To reader.FoundCount - 1 Step 1
        Console.WriteLine("BarCode CodeText: " + reader.FoundBarCodes(i).CodeText)
    Next
End Using

FoundCount

Gets recognized barcodes count

public int FoundCount { get; }

Property Value

int

Examples

This sample shows how to read barcodes with BarCodeReader

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
    reader.ReadBarCodes();
    for(int i = 0; reader.FoundCount > i; ++i)
        Console.WriteLine("BarCode CodeText: " + reader.FoundBarCodes[i].CodeText);
}
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    reader.ReadBarCodes()
    For i As Integer = 0 To reader.FoundCount - 1 Step 1
        Console.WriteLine("BarCode CodeText: " + reader.FoundBarCodes(i).CodeText)
    Next
End Using

ProcessorSettings

Gets a settings of using processor cores.

public static ProcessorSettings ProcessorSettings { get; }

Property Value

ProcessorSettings

Examples

This sample shows how to use ProcessorSettings to add maximum multi-threaded performnce

//this allows to use all cores for single BarCodeReader call
BarCodeReader.ProcessorSettings.UseAllCores = true;
//this allows to use current count of cores
BarCodeReader.ProcessorSettings.UseAllCores = false;
BarCodeReader.ProcessorSettings.UseOnlyThisCoresCount = Math.Max(1, Environment.ProcessorCount / 2);
'this allows to use all cores for single BarCodeReader call
BarCodeReader.ProcessorSettings.UseAllCores = True
'this allows to use current count of cores
BarCodeReader.ProcessorSettings.UseAllCores = False
BarCodeReader.ProcessorSettings.UseOnlyThisCoresCount = Math.Max(1, Environment.ProcessorCount / 2)

QualitySettings

QualitySettings allows to configure recognition quality and speed manually. You can quickly set up QualitySettings by embedded presets: HighPerformance, NormalQuality, HighQuality, MaxBarCodes or you can manually configure separate options. Default value of QualitySettings is NormalQuality.

[XmlSerialization(Type = XmlSerializationType.Element)]
public QualitySettings QualitySettings { get; set; }

Property Value

QualitySettings

Examples

This sample shows how to use QualitySettings with BarCodeReader

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
   //set high performance mode
   reader.QualitySettings = QualitySettings.HighPerformance;
   foreach (BarCodeResult result in reader.ReadBarCodes())
      Console.WriteLine("BarCode CodeText: " + result.CodeText);
}
using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
   //normal quality mode is set by default
   foreach (BarCodeResult result in reader.ReadBarCodes())
      Console.WriteLine("BarCode CodeText: " + result.CodeText);
}
using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
   //set high performance mode
   reader.QualitySettings = QualitySettings.HighPerformance;
   //set separate options
   reader.QualitySettings.AllowMedianSmoothing = true;
   reader.QualitySettings.MedianSmoothingWindowSize = 5;
   foreach (BarCodeResult result in reader.ReadBarCodes())
      Console.WriteLine("BarCode CodeText: " + result.CodeText);
}
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    'set high performance mode
    reader.QualitySettings = QualitySettings.HighPerformance
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
    Next
End Using
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    'normal quality mode is set by default
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
    Next
End Using
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
   'set high performance mode
   reader.QualitySettings = QualitySettings.HighPerformance
   'set separate options
   reader.QualitySettings.AllowMedianSmoothing = True
   reader.QualitySettings.MedianSmoothingWindowSize = 5
   For Each result As BarCodeResult In reader.ReadBarCodes()
       Console.WriteLine("BarCode Type: " + result.CodeTypeName)
   Next
End Using

Timeout

Gets or sets the timeout of recognition process in milliseconds.

[XmlSerialization(Type = XmlSerializationType.Element)]
public int Timeout { get; set; }

Property Value

int

Examples

This sample shows how to avoid recogntion hungs with timeount on large images

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png"))
{
    reader.Timeout = 5000;
    foreach (BarCodeResult result in reader.ReadBarCodes())
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
}
Using reader As New BarCodeReader("c:\test.png")
    reader.Timeout = 5000
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

Methods

Abort()

Function requests termination of current recognition session from other thread. Abort is unblockable method and returns control just after calling. The method should be used when recognition process is too long.

public void Abort()

Examples

This sample shows how to call Abort function from other thread

private static void ThreadRecognize(object readerObj)
{
    BarCodeReader reader = (BarCodeReader)readerObj;
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeType);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}

BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128);
Thread thread1 = new Thread(ThreadRecognize);
thread1.Start(reader);
Thread.Sleep(100);
reader.Abort();
Private Shared Sub ThreadRecognize(readerObj As Object)
    Dim reader As BarCodeReader = readerObj
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Sub

Dim reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
Dim thread1 As New Thread(AddressOf ThreadRecognize)
thread1.Start(reader)
Thread.Sleep(100)
reader.Abort()

Dispose() 

public void Dispose()

ExportToXml(string)

Exports BarCode properties to the xml-file specified

public bool ExportToXml(string xmlFile)

Parameters

xmlFile string

The name for the file

Returns

bool

Whether or not export completed successfully.

Returns True in case of success; False Otherwise

ExportToXml(Stream)

Exports BarCode properties to the xml-stream specified

public bool ExportToXml(Stream xmlStream)

Parameters

xmlStream Stream

The xml-stream for saving

Returns

bool

Whether or not export completed successfully.

Returns True in case of success; False Otherwise

ImportFromXml(string)

Imports BarCode properties from the xml-file specified and applies them to the current BarCodeReader instance.

public static BarCodeReader ImportFromXml(string xmlFile)

Parameters

xmlFile string

The name for the file

Returns

BarCodeReader

Returns True in case of success;

False Otherwise

ImportFromXml(Stream)

Imports BarCode properties from the xml-stream specified and applies them to the current BarCodeReader instance.

public static BarCodeReader ImportFromXml(Stream xmlStream)

Parameters

xmlStream Stream

The xml-stream for loading

Returns

BarCodeReader

Returns True in case of success;

False Otherwise

ReadBarCodes()

Reads Aspose.BarCode.BarCodeRecognition.BarCodeResults from the image.

public BarCodeResult[] ReadBarCodes()

Returns

BarCodeResult[]

Returns array of recognized Aspose.BarCode.BarCodeRecognition.BarCodeResults on the image. If nothing is recognized, zero array is returned.

Examples

This sample shows how to read barcodes with BarCodeReader

using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
    foreach (BarCodeResult result in reader.ReadBarCodes())
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
}
using (BarCodeReader reader = new BarCodeReader(@"c:\test.png", DecodeType.Code39, DecodeType.Code128))
{
    reader.ReadBarCodes();
    for(int i = 0; reader.FoundCount > i; ++i)
        Console.WriteLine("BarCode CodeText: " + reader.FoundBarCodes[i].CodeText);
}
Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    reader.ReadBarCodes()
    For i As Integer = 0 To reader.FoundCount - 1 Step 1
        Console.WriteLine("BarCode CodeText: " + reader.FoundBarCodes(i).CodeText)
    Next
End Using

Using reader As New BarCodeReader("c:\test.png", DecodeType.Code39, DecodeType.Code128)
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

SetBarCodeImage(Bitmap) 

public void SetBarCodeImage(Bitmap value)

Parameters

value Bitmap

SetBarCodeImage(Bitmap, Rectangle[]) 

public void SetBarCodeImage(Bitmap value, Rectangle[] areas)

Parameters

value Bitmap

areas Rectangle[]

SetBarCodeImage(Bitmap, Rectangle) 

public void SetBarCodeImage(Bitmap value, Rectangle area)

Parameters

value Bitmap

area Rectangle

SetBarCodeImage(string)

Sets image file for recognition. Must be called before ReadBarCodes() method.

public void SetBarCodeImage(string filename)

Parameters

filename string

The image file for recogniton.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader())
{
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128);
    reader.SetBarCodeImage(@"c:\test.png");
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader()
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128)
    reader.SetBarCodeImage("c:\test.png")
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

SetBarCodeImage(Stream)

Sets image stream for recognition. Must be called before ReadBarCodes() method.

public void SetBarCodeImage(Stream stream)

Parameters

stream Stream

The image stream for recogniton.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (FileStream fstr = new FileStream(@"c:\test.png", FileMode.Open))
using (BarCodeReader reader = new BarCodeReader())
{
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128);
    reader.SetBarCodeImage(fstr);
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using fstr = New FileStream("c:\test.png", FileMode.Open)
    Using reader As New BarCodeReader()
        reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128)
        reader.SetBarCodeImage(fstr)
        For Each result As BarCodeResult In reader.ReadBarCodes()
            Console.WriteLine("BarCode Type: " + result.CodeTypeName)
            Console.WriteLine("BarCode CodeText: " + result.CodeText)
        Next
    End Using
End Using

SetBarCodeReadType(params SingleDecodeType[])

Sets Aspose.BarCode.BarCodeRecognition.SingleDecodeType type array for recognition. Must be called before ReadBarCodes() method.

public void SetBarCodeReadType(params SingleDecodeType[] barcodeTypes)

Parameters

barcodeTypes SingleDecodeType[]

The Aspose.BarCode.BarCodeRecognition.SingleDecodeType type array to read.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader())
{
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128);
    reader.SetBarCodeImage(@"c:\test.png");
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader()
    reader.SetBarCodeReadType(DecodeType.Code39, DecodeType.Code128)
    reader.SetBarCodeImage("c:\test.png")
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using

SetBarCodeReadType(BaseDecodeType)

Sets decode type for recognition. Must be called before ReadBarCodes() method.

[XmlSerialization(Name = "BarCodeReadType")]
public void SetBarCodeReadType(BaseDecodeType type)

Parameters

type BaseDecodeType

The type of barcode to read.

Examples

This sample shows how to detect Code39 and Code128 barcodes.

using (BarCodeReader reader = new BarCodeReader())
{
    reader.SetBarCodeReadType(new MultyDecodeType(DecodeType.Code39, DecodeType.Code128));
    reader.SetBarCodeImage(@"c:\test.png");
    foreach (BarCodeResult result in reader.ReadBarCodes())
    {
        Console.WriteLine("BarCode Type: " + result.CodeTypeName);
        Console.WriteLine("BarCode CodeText: " + result.CodeText);
    }
}
Using reader As New BarCodeReader()
    reader.SetBarCodeReadType(New MultyDecodeType(DecodeType.Code39, DecodeType.Code128))
    reader.SetBarCodeImage("c:\test.png")
    For Each result As BarCodeResult In reader.ReadBarCodes()
        Console.WriteLine("BarCode Type: " + result.CodeTypeName)
        Console.WriteLine("BarCode CodeText: " + result.CodeText)
    Next
End Using
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