BarcodeGenerator.Export(String, Encoding, Stream) Method

Exports a barcode image for the supplied text to a stream using the specified encoding.

Namespace: DevExpress.Docs.Barcode

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

Declaration

C#

public void Export(
    string text,
    Encoding encoding,
    Stream stream
)

VB.NET

Public Sub Export(
    text As String,
    encoding As Encoding,
    stream As Stream
)

Parameters

Name	Type	Description
text	String	The text to encode as a barcode.
encoding	Encoding	The encoding to use for the text.
stream	Stream	The stream to which the barcode image will be written.

Remarks

The following code snippet encodes string data to a QR code and exports it as a PNG image:

C#

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

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 QR code as PNG image.
        using (FileStream pngStream = new FileStream(@"D:\barcode_symbology_qr_code.png", FileMode.Create, FileAccess.Write)) {
            generator.Export("https://example.com", Encoding.UTF8, pngStream);
        }
    }
}

VB.NET

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

Namespace ConsoleApp1

    Public Class Program
        Public Shared Sub Main(args As String())

            ' 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 QR code as PNG image.
                Using pngStream As New FileStream("D:\barcode_symbology_qr_code.png", FileMode.Create, FileAccess.Write)
                    generator.Export("https://example.com", Encoding.UTF8, pngStream)
                End Using
            End Using
        End Sub
    End Class
End Namespace