如何在 C# 中打印 QR 代码

// Reference to libraries
using IronPrint;                    // Library for printing functionalities
using IronPdf;                      // Library for PDF handling
using IronQr;                       // Library for QR code generation
using IronSoftware.Drawing;         // Library for image processing

' Reference to libraries
Imports IronPrint ' Library for printing functionalities
Imports IronPdf ' Library for PDF handling
Imports IronQr ' Library for QR code generation
Imports IronSoftware.Drawing ' Library for image processing

// Code to create a QR code using IronQR
QrCode myQr = QrWriter.Write("Hello IronPrint!");  // Generate a QR code with the message
AnyBitmap qrImage = myQr.Save();                   // Save QR code as an image
qrImage.SaveAs("assets/qr.png");                   // Save the png image file to the "assets" folder

' Code to create a QR code using IronQR
Dim myQr As QrCode = QrWriter.Write("Hello IronPrint!") ' Generate a QR code with the message
Dim qrImage As AnyBitmap = myQr.Save() ' Save QR code as an image
qrImage.SaveAs("assets/qr.png") ' Save the png image file to the "assets" folder

// Code to convert QR Image to PDF using IronPDF
var imageFiles = Directory.EnumerateFiles("assets").Where(f => f.EndsWith(".jpg") || f.EndsWith(".png"));  // Reading QR codes image files
// Convert the QR code images to a PDF and save it
ImageToPdfConverter.ImageToPdf(imageFiles).SaveAs("assets/composite.pdf");

' Code to convert QR Image to PDF using IronPDF
Dim imageFiles = Directory.EnumerateFiles("assets").Where(Function(f) f.EndsWith(".jpg") OrElse f.EndsWith(".png")) ' Reading QR codes image files
' Convert the QR code images to a PDF and save it
ImageToPdfConverter.ImageToPdf(imageFiles).SaveAs("assets/composite.pdf")

// Code for Printing using IronPrint
// Get available printer names
List<string> printerNames = Printer.GetPrinterNames();
// Create print settings object
PrintSettings printerSettings = new PrintSettings();
foreach(string printerName in printerNames)
{
    // Set desired printer name
    if(printerName.Equals("Microsoft Print to PDF"))
        printerSettings.PrinterName = printerName;
}
//Configure print setting
printerSettings.PaperSize = PaperSize.A4;                    // Set paper size
Margins margins = new Margins(30,10);                        // Set paper margins
printerSettings.PaperMargins = margins;                      // Apply margins
Printer.Print("assets/composite.pdf", printerSettings);      // Print the PDF

' Code for Printing using IronPrint
' Get available printer names
Dim printerNames As List(Of String) = Printer.GetPrinterNames()
' Create print settings object
Dim printerSettings As New PrintSettings()
For Each printerName As String In printerNames
	' Set desired printer name
	If printerName.Equals("Microsoft Print to PDF") Then
		printerSettings.PrinterName = printerName
	End If
Next printerName
'Configure print setting
printerSettings.PaperSize = PaperSize.A4 ' Set paper size
Dim margins As New Margins(30,10) ' Set paper margins
printerSettings.PaperMargins = margins ' Apply margins
Printer.Print("assets/composite.pdf", printerSettings) ' Print the PDF