BarCode Class

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

Namespace: DevExpress.BarCodes

Assembly: DevExpress.Docs.v26.1.dll

Declaration

C#

[DXLicenseDocs]
public class BarCode :
    IDisposable,
    IBasePrintable,
    IPrintingTarget

VB.NET

<DXLicenseDocs>
Public Class BarCode
    Implements IDisposable,
               IBasePrintable,
               IPrintingTarget

Remarks

Note

This documentation describes the legacy Barcode Generation API. For new projects, use the DevExpress.Docs.Barcode.BarcodeGenerator class in the DevExpress.Docs.Barcode namespace. To upgrade an existing project to the updated scheduler control, refer to the Migration Guide.

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

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

VB.NET

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

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

Implements

IDisposable

IBasePrintable

DevExpress.Printing.Native.IPrintingTarget

Inheritance

Object

BarCode