BarcodeGenerator.Export(String, Stream, DXImageFormat) Method

Exports a barcode image for the specified text to the provided stream in the given image format.

Namespace: DevExpress.Docs.Barcode

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

Declaration

C#

public void Export(
    string text,
    Stream stream,
    DXImageFormat format
)

VB.NET

Public Sub Export(
    text As String,
    stream As Stream,
    format As DXImageFormat
)

Parameters

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

Optional Parameters

Name	Type	Default	Description
format	DXImageFormat	null	(Optional) The image format for the exported barcode. If null, the default format (PNG) is used.

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", pngStream, DXImageFormat.Png);
        }
    }
}

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", pngStream, DXImageFormat.Png)
                End Using
            End Using
        End Sub
    End Class
End Namespace