BarcodeGenerator.ExportToImage(String, Encoding) Method

Generates a barcode image for the supplied text using the specified encoding.

Namespace: DevExpress.Docs.Barcode

Assembly: DevExpress.Docs.Barcode.v26.1.dll

Declaration

C#

public DXImage ExportToImage(
    string text,
    Encoding encoding
)

VB.NET

Public Function ExportToImage(
    text As String,
    encoding As Encoding
) As DXImage

Parameters

Name	Type	Description
text	String	The text to encode as a barcode.
encoding	Encoding	The encoding to use for the text.

Returns

Type	Description
DXImage	The generated barcode image.

Remarks

The following code snippet encodes text to a QR code and exports it as a PNG image using the DXImage class:

C#

using DevExpress.Docs;
using DevExpress.Docs.Barcode;
using DevExpress.Drawing;
using System.Drawing;
using System.Text;

namespace ConsoleApp1;

public class Program {
    public static async Task Main(string[] _) {

        // Configure QR code options.
        QRCodeOptions qrOptions = new QRCodeOptions {
            ErrorCorrectionLevel = QRCodeErrorCorrectionLevel.H,
            CompactionMode = QRCodeCompactionMode.Auto,
            IncludeQuietZone = false,
            Version = QRCodeVersion.Version10,
            ModuleSize = 40,
            BackColor = Color.LightGray,
            ShowText = false,
            Padding = new Padding(5),
            BorderWidth = 1,
            BorderColor = Color.Blue,
            Width = 500,
            Height = 500,
        };

        using BarcodeGenerator generator = new BarcodeGenerator(qrOptions);

        // Export text to a barcode image with UTF8 encoding.
        DXImage svgImage = generator.ExportToImage("https://example.com", Encoding.UTF8);

        // Save the barcode image to a file.
        using (FileStream stream = new FileStream("D:\\qrcode.png", FileMode.Create, FileAccess.Write)) {
            svgImage.Save(stream, DXImageFormat.Png);
        }
    }
}

VB.NET

Imports DevExpress.Docs
Imports DevExpress.Docs.Barcode
Imports DevExpress.Drawing
Imports System.Drawing
Imports System.Text

Namespace ConsoleApp1

    Public Class Program
        Public Shared Async Function Main(args As String()) As Task

            ' Configure QR code options.
            Dim qrOptions As New QRCodeOptions With {
                .ErrorCorrectionLevel = QRCodeErrorCorrectionLevel.H,
                .CompactionMode = QRCodeCompactionMode.Auto,
                .IncludeQuietZone = False,
                .Version = QRCodeVersion.Version10,
                .ModuleSize = 40,
                .BackColor = Color.LightGray,
                .ShowText = False,
                .Padding = New Padding(5),
                .BorderWidth = 1,
                .BorderColor = Color.Blue,
                .Width = 500,
                .Height = 500
            }

            Using generator As New BarcodeGenerator(qrOptions)

                ' Export text to a barcode image with UTF8 encoding.
                Dim svgImage As DXImage = generator.ExportToImage("https://example.com", Encoding.UTF8)

                ' Save the barcode image to a file.
                Using stream As New FileStream("D:\qrcode.png", FileMode.Create, FileAccess.Write)
                    svgImage.Save(stream, DXImageFormat.Png)
                End Using
            End Using
        End Function
    End Class
End Namespace