Zelle QRコード (.NET開発者向けの動作方法)

using IronQR;
using IronSoftware.Drawing;

// Generate a payment QR code
public static void GeneratePaymentQR(string recipientId, string recipientName)
{
    // Create payment data in standard format
    string paymentData = $"PAYMENT:{recipientId}|{recipientName}|USD";

    // Initialize QR writer with custom styling
    QrWriter writer = new QrWriter();

    // Generate QR code with error correction
    QrCode qrCode = writer.Write(paymentData);

    // Style the QR code for branding
    qrCode.SetMargin(10);
    qrCode.SetForegroundColor(Color.FromHex("#5B3A9D")); // Zelle purple

    // Save in multiple formats for flexibility
    qrCode.SaveAs("payment-qr.png");
    qrCode.SaveAs("payment-qr.jpg");
    qrCode.SaveAs("payment-qr.svg");
}

Imports IronQR
Imports IronSoftware.Drawing

' Generate a payment QR code
Public Shared Sub GeneratePaymentQR(recipientId As String, recipientName As String)
    ' Create payment data in standard format
    Dim paymentData As String = $"PAYMENT:{recipientId}|{recipientName}|USD"

    ' Initialize QR writer with custom styling
    Dim writer As New QrWriter()

    ' Generate QR code with error correction
    Dim qrCode As QrCode = writer.Write(paymentData)

    ' Style the QR code for branding
    qrCode.SetMargin(10)
    qrCode.SetForegroundColor(Color.FromHex("#5B3A9D")) ' Zelle purple

    ' Save in multiple formats for flexibility
    qrCode.SaveAs("payment-qr.png")
    qrCode.SaveAs("payment-qr.jpg")
    qrCode.SaveAs("payment-qr.svg")
End Sub

using IronQR;
using System.Threading.Tasks;

// Async QR processing for high-performance banking apps
public async Task<string> ProcessPaymentQRAsync(byte[] qrImageData)
{
    return await Task.Run(() =>
    {
        // Initialize reader with optimized settings
        QrReader reader = new QrReader();

        // Configure for banking-specific QR codes
        reader.Configuration.Speed = ProcessingSpeed.Faster;
        reader.Configuration.TryHarder = true;

        // Process QR code from byte array
        var bitmap = AnyBitmap.FromBytes(qrImageData);
        QrImageInput input = new QrImageInput(bitmap);

        // Read with enhanced error handling
        var results = reader.Read(input);

        foreach (var result in results)
        {
            if (result.Value.StartsWith("PAYMENT:"))
            {
                return result.Value;
            }
        }

        throw new InvalidOperationException("Invalid payment QR code");
    });
}

Imports IronQR
Imports System.Threading.Tasks

' Async QR processing for high-performance banking apps
Public Async Function ProcessPaymentQRAsync(qrImageData As Byte()) As Task(Of String)
    Return Await Task.Run(Function()
                              ' Initialize reader with optimized settings
                              Dim reader As New QrReader()

                              ' Configure for banking-specific QR codes
                              reader.Configuration.Speed = ProcessingSpeed.Faster
                              reader.Configuration.TryHarder = True

                              ' Process QR code from byte array
                              Dim bitmap = AnyBitmap.FromBytes(qrImageData)
                              Dim input As New QrImageInput(bitmap)

                              ' Read with enhanced error handling
                              Dim results = reader.Read(input)

                              For Each result In results
                                  If result.Value.StartsWith("PAYMENT:") Then
                                      Return result.Value
                                  End If
                              Next

                              Throw New InvalidOperationException("Invalid payment QR code")
                          End Function)
End Function

using System;
using System.Collections.Generic;
using IronQR;
using IronSoftware.Drawing;

class Program
{
    static void Main()
    {
        // Load the QR code image from file
        var inputBmp = AnyBitmap.FromFile("path_to_QR.png");

        // Wrap the image in a QrImageInput object
        QrImageInput imageInput = new QrImageInput(inputBmp);

        // Initialize the QR reader
        QrReader reader = new QrReader();

        // Read the QR code, obtaining results as an enumerable collection
        IEnumerable<QrResult> results = reader.Read(imageInput);

        // Loop through each result and print the decoded QR code value
        foreach (var result in results)
        {
            Console.WriteLine($"QR Code Value: {result.Value}");
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports IronQR
Imports IronSoftware.Drawing

Friend Class Program
	Shared Sub Main()
		' Load the QR code image from file
		Dim inputBmp = AnyBitmap.FromFile("path_to_QR.png")

		' Wrap the image in a QrImageInput object
		Dim imageInput As New QrImageInput(inputBmp)

		' Initialize the QR reader
		Dim reader As New QrReader()

		' Read the QR code, obtaining results as an enumerable collection
		Dim results As IEnumerable(Of QrResult) = reader.Read(imageInput)

		' Loop through each result and print the decoded QR code value
		For Each result In results
			Console.WriteLine($"QR Code Value: {result.Value}")
		Next result
	End Sub
End Class

using IronQR;
using System.Security.Cryptography;
using System.Text;

public class SecurePaymentQR
{
    private readonly QrWriter _writer;
    private readonly QrReader _reader;

    public SecurePaymentQR()
    {
        _writer = new QrWriter();
        _reader = new QrReader();
    }

    public QrCode GenerateSecurePaymentQR(string accountId, decimal amount, string transactionId)
    {
        // Create structured payment data
        var paymentData = new
        {
            AccountId = accountId,
            Amount = amount,
            TransactionId = transactionId,
            Timestamp = DateTime.UtcNow,
            Checksum = GenerateChecksum(accountId, amount, transactionId)
        };

        // Serialize to JSON
        string jsonData = System.Text.Json.JsonSerializer.Serialize(paymentData);

        // Generate QR with high error correction for financial data
        var qrCode = _writer.Write(jsonData);
        qrCode.SetErrorCorrectionLevel(QrErrorCorrectionLevel.High);

        return qrCode;
    }

    private string GenerateChecksum(string accountId, decimal amount, string transactionId)
    {
        string data = $"{accountId}|{amount}|{transactionId}";
        using (SHA256 sha256 = SHA256.Create())
        {
            byte[] bytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(data));
            return Convert.ToBase64String(bytes);
        }
    }
}

Imports IronQR
Imports System.Security.Cryptography
Imports System.Text
Imports System.Text.Json

Public Class SecurePaymentQR
    Private ReadOnly _writer As QrWriter
    Private ReadOnly _reader As QrReader

    Public Sub New()
        _writer = New QrWriter()
        _reader = New QrReader()
    End Sub

    Public Function GenerateSecurePaymentQR(accountId As String, amount As Decimal, transactionId As String) As QrCode
        ' Create structured payment data
        Dim paymentData = New With {
            .AccountId = accountId,
            .Amount = amount,
            .TransactionId = transactionId,
            .Timestamp = DateTime.UtcNow,
            .Checksum = GenerateChecksum(accountId, amount, transactionId)
        }

        ' Serialize to JSON
        Dim jsonData As String = JsonSerializer.Serialize(paymentData)

        ' Generate QR with high error correction for financial data
        Dim qrCode = _writer.Write(jsonData)
        qrCode.SetErrorCorrectionLevel(QrErrorCorrectionLevel.High)

        Return qrCode
    End Function

    Private Function GenerateChecksum(accountId As String, amount As Decimal, transactionId As String) As String
        Dim data As String = $"{accountId}|{amount}|{transactionId}"
        Using sha256 As SHA256 = SHA256.Create()
            Dim bytes As Byte() = sha256.ComputeHash(Encoding.UTF8.GetBytes(data))
            Return Convert.ToBase64String(bytes)
        End Using
    End Function
End Class