BarCode Class

Represents a bar code for given data with the specified options.

Namespace: DevExpress.BarCodes

Assembly: DevExpress.Docs.v23.2.dll

NuGet Package: DevExpress.Document.Processor

Declaration

C#

public class BarCode :
    IDisposable,
    IBasePrintable

VB.NET

Public Class BarCode
    Implements IDisposable,
               IBasePrintable

Remarks

Use BarCode.CodeText or BarCode.CodeBinaryData properties to set the data to be represented by a bar code.

Specify the BarCode.Symbology property to define the bar code type. Note that each symbology has its own restrictions for the encoded data.

Symbology specifics are available by the BarCode‘s BarCode.Options property.

The BarCode.BarCodeImage property gets an image that is the bar code.

You can use the BarCode.Print, BarCode.PrintDialog or the BarCode.ShowPrintPreview methods to print the bar code.

The BarCode.ExportToPdf method enables you to print a bar code to PDF.

The code sample below creates a QR code and displays it in a PictureBox.

C#

using System;
using System.Text;
using DevExpress.BarCodes;
using DevExpress.Drawing;
using DevExpress.Drawing.Extensions;
//...

private void button1_Click(object sender, EventArgs e)
{
    this.pictureBox1.Image = null;

    BarCode barCode = new BarCode();
    barCode.Symbology = Symbology.QRCode;
    barCode.CodeText = "https://www.devexpress.com/";
    barCode.BackColor = Color.White;
    barCode.ForeColor = Color.Black;
    barCode.RotationAngle = 0;
    barCode.CodeBinaryData = Encoding.Default.GetBytes(barCode.CodeText);
    barCode.Options.QRCode.CompactionMode = QRCodeCompactionMode.Byte;
    barCode.Options.QRCode.ErrorLevel = QRCodeErrorLevel.Q;
    barCode.Options.QRCode.ShowCodeText = false;
    barCode.DpiX = 72;
    barCode.DpiY = 72;
    barCode.Module = 2f;

    this.pictureBox1.Image = barCode.BarCodeImage.ConvertToGdiPlusImage();
}

VB.NET

Option Infer On

Imports System
Imports System.Text
Imports DevExpress.BarCodes
Imports DevExpress.Drawing
Imports DevExpress.Drawing.Extensions
'...

Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs)
    Me.pictureBox1.Image = Nothing

    Dim barCode As New BarCode()
    barCode.Symbology = Symbology.QRCode
    barCode.CodeText = "https://www.devexpress.com/"
    barCode.BackColor = Color.White
    barCode.ForeColor = Color.Black
    barCode.RotationAngle = 0
    barCode.CodeBinaryData = Encoding.Default.GetBytes(barCode.CodeText)
    barCode.Options.QRCode.CompactionMode = QRCodeCompactionMode.Byte
    barCode.Options.QRCode.ErrorLevel = QRCodeErrorLevel.Q
    barCode.Options.QRCode.ShowCodeText = False
    barCode.DpiX = 72
    barCode.DpiY = 72
    barCode.Module = 2F

    Me.pictureBox1.Image = barCode.BarCodeImage.ConvertToGdiPlusImage()
End Sub

Inheritance

Object

BarCode