BarcodeGenerator.ExportToPdf(String, Stream) Method

Exports a barcode to PDF format.

Namespace: DevExpress.Docs.Barcode

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

Declaration

C#

public void ExportToPdf(
    string text,
    Stream stream
)

VB.NET

Public Sub ExportToPdf(
    text As String,
    stream As Stream
)

Parameters

Name	Type	Description
text	String	The text to encode in the barcode.
stream	Stream	The stream to which the PDF document is written.

Remarks

The following code snippet exports a barcode to PDF format and then saves it to a file using the PdfDocument class:

C#

using DevExpress.Docs;
using DevExpress.Docs.Barcode;
using DevExpress.Docs.Pdf;
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 the barcode as PDF.
        using MemoryStream pdfMemoryStream = new MemoryStream();
        generator.ExportToPdf("https://example.com", pdfMemoryStream);
        pdfMemoryStream.Position = 0;

        // Create a PDF document from the stream, add text to it, and save it to a file.
        using PdfDocument pdfDocument = new PdfDocument(pdfMemoryStream);
        pdfDocument.Pages[0].AddTextFragment("Scan it", 60, 300);
        using FileStream outputStream = new FileStream(@"D:\output.pdf", FileMode.Create, FileAccess.Write);
        pdfDocument.Save(outputStream);
}

VB.NET

Imports DevExpress.Docs
Imports DevExpress.Docs.Barcode
Imports DevExpress.Docs.Pdf
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 the barcode as PDF.
                Using pdfMemoryStream As New MemoryStream()
                    generator.ExportToPdf("https://example.com", pdfMemoryStream)
                    pdfMemoryStream.Position = 0

                    ' Create a PDF document from the stream, add text to it, and save it to a file.
                    Using pdfDocument As New PdfDocument(pdfMemoryStream)
                        pdfDocument.Pages(0).AddTextFragment("Scan it", 60, 300)
                        Using outputStream As New FileStream("D:\output.pdf", FileMode.Create, FileAccess.Write)
                            pdfDocument.Save(outputStream)
                        End Using
                    End Using
                End Using
            End Using
        End Sub
    End Class
End Namespace