QRCodeGenerator.Logo Property

Specifies the image that overlays the QR code.

Namespace: DevExpress.XtraPrinting.BarCode

Assembly: DevExpress.Printing.v19.2.Core.dll

Declaration

C#

[DefaultValue(null)]
public ImageSource Logo { get; set; }

VB.NET

<DefaultValue(Nothing)>
Public Property Logo As ImageSource

Property Value

Type	Default	Description
ImageSource	*null*	The image to be displayed on the QR code.

Remarks

Use this property to specify an image for a QR code. For example, guidelines on Swiss bill reports demand that a QR code has a Swiss cross logo. The Create a Swiss QR Bill topic explains how to set up a QR code for a Swiss QR-bill report.

You can assign images of the following formats: BMP, JPG, JPEG, GIF, TIF, TIFF, PNG, ICO, DIB, RLE, JPE, JFIF, EMF, WMF, SVG.

Note

If the Logo property is specified, the QRCodeGenerator.ErrorCorrectionLevel enumeration values are halved.

The code below demonstrates how to set this property to an SVG image in code:

C#

using System;
using System.Collections.Generic;
using System.Drawing.Printing;
using System.Windows.Forms;
using DevExpress.XtraPrinting.BarCode;
using DevExpress.XtraPrinting.Drawing;
using DevExpress.XtraReports.UI;
// ...
public XRBarCode CreateQRCode(string BarCodeText) {
    // Create a bar code control.
    XRBarCode barCode = new XRBarCode();

    // Set the bar code's type to QRCode.
    barCode.Symbology = new QRCodeGenerator();

    barCode.ShowText = false;
    barCode.Width = 470;
    barCode.Height = 470;
    barcode.Module = 4.07F;

    // Adjust the properties specific to the bar code type.
    ((QRCodeGenerator)barCode.Symbology).CompactionMode = QRCodeCompactionMode.Byte;
    ((QRCodeGenerator)barCode.Symbology).ErrorCorrectionLevel = QRCodeErrorCorrectionLevel.M;
    ((QRCodeGenerator)barCode.Symbology).Version = QRCodeVersion.Version24;
    ((QRCodeGenerator)barCode.Symbology).Logo = ImageSource.FromFile(@"..\..\CH-Kreuz_7mm.svg");

    return barCode;
}

VB.NET

Imports System
Imports System.Collections.Generic
Imports System.Drawing.Printing
Imports System.Windows.Forms
Imports DevExpress.XtraPrinting.BarCode
Imports DevExpress.XtraPrinting.Drawing
Imports DevExpress.XtraReports.UI
' ...
Public Function CreateQRCode(ByVal BarCodeText As String) As XRBarCode
    ' Create a bar code control.
    Dim barCode As New XRBarCode()

    ' Set the bar code's type to QRCode.
    barCode.Symbology = New QRCodeGenerator()

    barCode.ShowText = False
    barCode.Width = 470
    barCode.Height = 470
    barcode.Module = 4.07F

    ' Adjust the properties specific to the bar code type.
    CType(barCode.Symbology, QRCodeGenerator).CompactionMode = QRCodeCompactionMode.Byte
    CType(barCode.Symbology, QRCodeGenerator).ErrorCorrectionLevel = QRCodeErrorCorrectionLevel.M
    CType(barCode.Symbology, QRCodeGenerator).Version = QRCodeVersion.Version24
    CType(barCode.Symbology, QRCodeGenerator).Logo = ImageSource.FromFile("..\..\CH-Kreuz_7mm.svg")

    Return barCode
End Function

Limitation

Logo is not supported when the AutoModule property is enabled.