QR Code .NET Core：使用 C# 读取和生成二维码

using IronQr;
using IronSoftware.Drawing;

// Load image containing QR code
var inputBmp = AnyBitmap.FromFile("qr-sample.png");
// Create QrImageInput from the bitmap
QrImageInput imageInput = new QrImageInput(inputBmp);
// Initialize QR Reader with ML model
QrReader reader = new QrReader();
// Read and decode all QR codes in the image
IEnumerable<QrResult> results = reader.Read(imageInput);
// Output decoded text strings
foreach (var qrCode in results)
{
    Console.WriteLine($"QR Code Value: {qrCode.Value}");
    Console.WriteLine($"URL: {qrCode.Url}");
}

Imports IronQr
Imports IronSoftware.Drawing

' Load image containing QR code
Dim inputBmp = AnyBitmap.FromFile("qr-sample.png")
' Create QrImageInput from the bitmap
Dim imageInput As New QrImageInput(inputBmp)
' Initialize QR Reader with ML model
Dim reader As New QrReader()
' Read and decode all QR codes in the image
Dim results As IEnumerable(Of QrResult) = reader.Read(imageInput)
' Output decoded text strings
For Each qrCode In results
    Console.WriteLine($"QR Code Value: {qrCode.Value}")
    Console.WriteLine($"URL: {qrCode.Url}")
Next

using IronQr;
using IronSoftware.Drawing;

var inputBmp = AnyBitmap.FromFile("document-with-qr.png");
QrImageInput imageInput = new QrImageInput(inputBmp);
QrReader reader = new QrReader();
IEnumerable<QrResult> results = reader.Read(imageInput);
foreach (var qrCode in results)
{
    // Access decoded value
    Console.WriteLine($"Data: {qrCode.Value}");
    // Get corner coordinate positions
    foreach (PointF point in qrCode.Points)
    {
        Console.WriteLine($"Position: {point.X}, {point.Y}");
    }
}

Imports IronQr
Imports IronSoftware.Drawing

Dim inputBmp = AnyBitmap.FromFile("document-with-qr.png")
Dim imageInput As New QrImageInput(inputBmp)
Dim reader As New QrReader()
Dim results As IEnumerable(Of QrResult) = reader.Read(imageInput)

For Each qrCode In results
    ' Access decoded value
    Console.WriteLine($"Data: {qrCode.Value}")
    ' Get corner coordinate positions
    For Each point As PointF In qrCode.Points
        Console.WriteLine($"Position: {point.X}, {point.Y}")
    Next
Next

using IronQr;
using IronSoftware.Drawing;

// Configure QR options with high error correction
var qrOptions = new QrOptions(QrErrorCorrectionLevel.High, 20);
// Generate a QR code with specified error correction
QrCode myQr = QrWriter.Write("https://ironsoftware.com", qrOptions);
// Save as PNG image
AnyBitmap qrImage = myQr.Save();
qrImage.SaveAs("high-error-correction-qr.png");

IRON VB CONVERTER ERROR developers@ironsoftware.com

using IronQr;
using IronSoftware.Drawing;

// Generate QR that encodes Japanese Unicode text
QrCode japaneseQr = QrWriter.Write("こんにちは世界");
// The library selects Kanji mode automatically
AnyBitmap qrImage = japaneseQr.Save();
qrImage.SaveAs("japanese-qr.png");

Imports IronQr
Imports IronSoftware.Drawing

' Generate QR that encodes Japanese Unicode text
Dim japaneseQr As QrCode = QrWriter.Write("こんにちは世界")
' The library selects Kanji mode automatically
Dim qrImage As AnyBitmap = japaneseQr.Save()
qrImage.SaveAs("japanese-qr.png")

using IronQr;
using IronSoftware.Drawing;

// Generate QR code with URL payload
var urlQrCode = QrWriter.Write("https://ironsoftware.com/csharp/qr/");
// Save QR as PNG image file
AnyBitmap qrImage = urlQrCode.Save();
qrImage.SaveAs("url-qr-code.png");
Console.WriteLine("QR code generated successfully.");

Imports IronQr
Imports IronSoftware.Drawing

' Generate QR code with URL payload
Dim urlQrCode = QrWriter.Write("https://ironsoftware.com/csharp/qr/")
' Save QR as PNG image file
Dim qrImage As AnyBitmap = urlQrCode.Save()
qrImage.SaveAs("url-qr-code.png")
Console.WriteLine("QR code generated successfully.")

using IronQr;
using IronSoftware.Drawing;

// Define custom colors for the QR code
var darkColor = Color.FromArgb(30, 30, 120);   // Deep navy foreground
var lightColor = Color.White;

var options = new QrOptions(QrErrorCorrectionLevel.High, maxVersion: 20)
{
    BackgroundColor = lightColor,
    Color = darkColor,
    // Embed a logo image into the QR center
    Logo = AnyBitmap.FromFile("logo.png")
};

QrCode styledQr = QrWriter.Write("https://ironsoftware.com/csharp/qr/", options);
AnyBitmap output = styledQr.Save();
output.SaveAs("branded-qr.png");

Imports IronQr
Imports IronSoftware.Drawing

' Define custom colors for the QR code
Dim darkColor As Color = Color.FromArgb(30, 30, 120) ' Deep navy foreground
Dim lightColor As Color = Color.White

Dim options As New QrOptions(QrErrorCorrectionLevel.High, maxVersion:=20) With {
    .BackgroundColor = lightColor,
    .Color = darkColor,
    ' Embed a logo image into the QR center
    .Logo = AnyBitmap.FromFile("logo.png")
}

Dim styledQr As QrCode = QrWriter.Write("https://ironsoftware.com/csharp/qr/", options)
Dim output As AnyBitmap = styledQr.Save()
output.SaveAs("branded-qr.png")

using IronQr;
using IronSoftware.Drawing;
using Microsoft.AspNetCore.Mvc;

[ApiController]
[Route("api/qr")]
public class QrScanController : ControllerBase
{
    [HttpPost("scan")]
    public IActionResult Scan(IFormFile imageFile)
    {
        using var stream = imageFile.OpenReadStream();
        var bitmap = AnyBitmap.FromStream(stream);
        var imageInput = new QrImageInput(bitmap);
        var reader = new QrReader();
        var results = reader.Read(imageInput);

        var decoded = results.Select(r => new { r.Value, r.Url }).ToList();
        return Ok(decoded);
    }
}

Imports IronQr
Imports IronSoftware.Drawing
Imports Microsoft.AspNetCore.Mvc

<ApiController>
<Route("api/qr")>
Public Class QrScanController
    Inherits ControllerBase

    <HttpPost("scan")>
    Public Function Scan(imageFile As IFormFile) As IActionResult
        Using stream = imageFile.OpenReadStream()
            Dim bitmap = AnyBitmap.FromStream(stream)
            Dim imageInput = New QrImageInput(bitmap)
            Dim reader = New QrReader()
            Dim results = reader.Read(imageInput)

            Dim decoded = results.Select(Function(r) New With {Key .Value = r.Value, Key .Url = r.Url}).ToList()
            Return Ok(decoded)
        End Using
    End Function
End Class

using IronQr;
using IronSoftware.Drawing;

// Generate QR and convert to a byte array for display in MAUI
QrCode qr = QrWriter.Write("https://ironsoftware.com/csharp/qr/");
AnyBitmap bitmap = qr.Save();
byte[] imageBytes = bitmap.ExportBytes();

// Bind imageBytes to an <Image Source> in your MAUI page

Imports IronQr
Imports IronSoftware.Drawing

' Generate QR and convert to a byte array for display in MAUI
Dim qr As QrCode = QrWriter.Write("https://ironsoftware.com/csharp/qr/")
Dim bitmap As AnyBitmap = qr.Save()
Dim imageBytes As Byte() = bitmap.ExportBytes()

' Bind imageBytes to an <Image Source> in your MAUI page