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

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

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

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

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

Module Program
    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
    End Sub
End Module

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

Module Program
    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
    End Sub
End Module

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

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 = System.Text.Json.JsonSerializer.Serialize(paymentData)

        ' Generate QR with high error correction for financial data
        Dim qrCode As 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

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

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 = System.Text.Json.JsonSerializer.Serialize(paymentData)

        ' Generate QR with high error correction for financial data
        Dim qrCode As 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