BarcodeData Constructor(BarcodeSymbology,byte[])

Summary

Initializes a new instance of the BarcodeData class with specified symbology and data.

Syntax

Objective-C

C++

Java

public BarcodeData( 
   BarcodeSymbology symbology, 
   byte[] data 
)

Public Function New( _ 
   ByVal symbology As BarcodeSymbology, _ 
   ByVal data() As Byte _ 
)

- (instancetype)initWithSymbology:(LTBarcodeSymbology)symbology  
                             data:(nullable NSData *)data

public BarcodeData( 
  BarcodeSymbology symbology, 
  byte[] data 
)

public: 
BarcodeData(  
   BarcodeSymbology symbology, 
   array<byte>^ data 
)

Parameters

symbology
Barcode symbology to use.

data
An array of Byte that specifies the data to use. This value can be null (Nothing in VB).

Remarks

This constructor initializes the BarcodeData member as follows:

Member	Value
Symbology	symbology
Bounds	LeadRect.Empty
RotationAngle	0
BarWidthReduction	0
Byte array inside GetData	data (same reference, the data is not copied)
Value	ASCII text string representation of data, if this parameter is null, then Value is null too.
Tag	null (Nothing in Visual Basic)

To quickly construct a new BarcodeData object with a specific symbology and data as a string value, use BarcodeData(BarcodeSymbology symbology, string value) to construct a default BarcodeData, use BarcodeData().

To create an instance of BarcodeData suitable for writing for a specified symbology, use CreateDefaultBarcodeData.

Example

This example creates a BarcodeData using specified symbology and raw data. Then it writes it to an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void BarcodeData_FromByteArrayExample() 
{ 
   string outFileName = Path.Combine(LEAD_VARS.ImagesDir, @"MyBarcode.tif"); 
 
   // This is UPC data to save a a string 
   string originalString = "01234567890"; 
 
   // We will get it as a byte array to use in the rest of this example 
   byte[] bytes = Encoding.ASCII.GetBytes(originalString); 
 
   // Create a BarcodeData object from this data 
   BarcodeData data = new BarcodeData(BarcodeSymbology.UPCA, bytes); 
   data.Bounds = new LeadRect(0, 0, 400, 200); 
 
   // Make sure it is the same 
   Debug.Assert(data.Value == originalString); 
 
   // Write it to an image 
   BarcodeEngine engine = new BarcodeEngine(); 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      int resolution = 300; 
      LeadRect pixels = data.Bounds; 
      using (RasterImage image = RasterImage.Create(pixels.Width, pixels.Height, 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White))) 
      { 
         engine.Writer.WriteBarcode(image, data, null); 
 
         codecs.Save(image, outFileName, RasterImageFormat.Tif, 1); 
      } 
   } 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Barcode 
Imports Leadtools.ImageProcessing 
 
Public Sub BarcodeData_FromByteArrayExample() 
   Dim outFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcode.tif") 
 
   ' This is UPC data to save a a string 
   Dim originalString As String = "01234567890" 
 
   ' We will get it as a byte array to use in the rest of this example 
   Dim bytes() As Byte = Encoding.ASCII.GetBytes(originalString) 
 
   ' Create a BarcodeData object from this data 
   Dim data As New BarcodeData(BarcodeSymbology.UPCA, bytes) 
   data.Bounds = New LeadRect(0, 0, 400, 200) 
 
   ' Make sure it is the same 
   Debug.Assert(data.Value = originalString) 
 
   ' Write it to an image 
   Dim engine As New BarcodeEngine() 
   Using codecs As New RasterCodecs() 
      Dim resolution As Integer = 300 
      Dim pixels As LeadRect = data.Bounds 
      Using image As RasterImage = RasterImage.Create(pixels.Width, pixels.Height, 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White)) 
         engine.Writer.WriteBarcode(image, data, Nothing) 
 
         codecs.Save(image, outFileName, RasterImageFormat.Tif, 1) 
      End Using 
   End Using 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class

Requirements

Target Platforms

Reference

BarcodeData Class

BarcodeData Members

Overload List

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Help Version 21.0.2021.7.2

Leadtools.Barcode Assembly

Introduction

Getting Started

Namespaces

Leadtools.Barcode Namespace

Assemblies