QRCoder.NET 与 IronBarcode：C# 条码库对比

using QRCoder;
using System.IO;

var qrGenerator = new QRCodeGenerator();
var qrCodeData = qrGenerator.CreateQrCode(
    "https://example.com",
    QRCodeGenerator.ECCLevel.M
);

// PNG bytes via PngByteQRCode
var pngQR = new PngByteQRCode(qrCodeData);
byte[] pngBytes = pngQR.GetGraphic(20); // 20px per module
File.WriteAllBytes("qr.png", pngBytes);

// SVG string via SvgQRCode
string svgContent = new SvgQRCode(qrCodeData).GetGraphic(10);
File.WriteAllText("qr.svg", svgContent);

Imports QRCoder
Imports System.IO

Dim qrGenerator As New QRCodeGenerator()
Dim qrCodeData = qrGenerator.CreateQrCode("https://example.com", QRCodeGenerator.ECCLevel.M)

' PNG bytes via PngByteQRCode
Dim pngQR As New PngByteQRCode(qrCodeData)
Dim pngBytes As Byte() = pngQR.GetGraphic(20) ' 20px per module
File.WriteAllBytes("qr.png", pngBytes)

' SVG string via SvgQRCode
Dim svgContent As String = New SvgQRCode(qrCodeData).GetGraphic(10)
File.WriteAllText("qr.svg", svgContent)

using QRCoder;
using System.IO;

var qrGenerator = new QRCodeGenerator();
var qrCodeData = qrGenerator.CreateQrCode(
    "https://example.com",
    QRCodeGenerator.ECCLevel.M
);

var qrCode = new PngByteQRCode(qrCodeData);
byte[] pngBytes = qrCode.GetGraphic(20); // pixels per module
File.WriteAllBytes("qr.png", pngBytes);

Imports QRCoder
Imports System.IO

Dim qrGenerator As New QRCodeGenerator()
Dim qrCodeData = qrGenerator.CreateQrCode("https://example.com", QRCodeGenerator.ECCLevel.M)

Dim qrCode As New PngByteQRCode(qrCodeData)
Dim pngBytes As Byte() = qrCode.GetGraphic(20) ' pixels per module
File.WriteAllBytes("qr.png", pngBytes)

using IronBarCode;

// Single fluent call — no intermediate objects
BarcodeWriter.CreateBarcode("https://example.com", BarcodeEncoding.QRCode)
    .ResizeTo(400, 400)
    .SaveAsPng("qr.png");

Imports IronBarCode

' Single fluent call — no intermediate objects
BarcodeWriter.CreateBarcode("https://example.com", BarcodeEncoding.QRCode) _
    .ResizeTo(400, 400) _
    .SaveAsPng("qr.png")

using IronBarCode;

var qr = QRCodeWriter.CreateQrCode(
    "https://example.com",
    500,
    QRCodeWriter.QrErrorCorrectionLevel.Medium
);
qr.SaveAsPng("qr.png");

Imports IronBarCode

Dim qr = QRCodeWriter.CreateQrCode("https://example.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium)
qr.SaveAsPng("qr.png")

using QRCoder;
using System.Drawing;

var qrGenerator = new QRCodeGenerator();
var qrCodeData = qrGenerator.CreateQrCode(
    "https://example.com",
    QRCodeGenerator.ECCLevel.H // High ECC required when logo occludes part of the code
);

var qrCode = new QRCode(qrCodeData);
var logoBitmap = new Bitmap("logo.png");
var qrBitmap = qrCode.GetGraphic(10, Color.Black, Color.White, logoBitmap);
qrBitmap.Save("qr-logo.png", System.Drawing.Imaging.ImageFormat.Png);

Imports QRCoder
Imports System.Drawing

Dim qrGenerator As New QRCodeGenerator()
Dim qrCodeData = qrGenerator.CreateQrCode("https://example.com", QRCodeGenerator.ECCLevel.H) ' High ECC required when logo occludes part of the code

Dim qrCode As New QRCode(qrCodeData)
Dim logoBitmap As New Bitmap("logo.png")
Dim qrBitmap = qrCode.GetGraphic(10, Color.Black, Color.White, logoBitmap)
qrBitmap.Save("qr-logo.png", System.Drawing.Imaging.ImageFormat.Png)

using IronBarCode;
using System.Drawing;

// Logo embedding
var qr = QRCodeWriter.CreateQrCode(
    "https://example.com",
    500,
    QRCodeWriter.QrErrorCorrectionLevel.Highest
);
qr.AddBrandLogo("logo.png");
qr.SaveAsPng("qr-logo.png");

// Colour customisation
var coloredQr = QRCodeWriter.CreateQrCode("https://example.com", 500);
coloredQr.ChangeBarCodeColor(Color.DarkBlue);
coloredQr.SaveAsPng("colored-qr.png");

Imports IronBarCode
Imports System.Drawing

' Logo embedding
Dim qr = QRCodeWriter.CreateQrCode("https://example.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Highest)
qr.AddBrandLogo("logo.png")
qr.SaveAsPng("qr-logo.png")

' Colour customisation
Dim coloredQr = QRCodeWriter.CreateQrCode("https://example.com", 500)
coloredQr.ChangeBarCodeColor(Color.DarkBlue)
coloredQr.SaveAsPng("colored-qr.png")

// 二维码 has no reading API.
// These methods do not exist:
//   qrGenerator.Decode("image.png");
//   QRCodeReader.Read("image.png");
//
// A separate library (e.g., ZXing.Net) is required for decoding.

' 二维码 has no reading API.
' These methods do not exist:
'   qrGenerator.Decode("image.png")
'   QRCodeReader.Read("image.png")
'
' A separate library (e.g., ZXing.Net) is required for decoding.

using IronBarCode;

// Reading a QR code — no separate library required
var results = BarcodeReader.Read("qr.png");
foreach (var result in results)
{
    Console.WriteLine(result.Text);        // decoded value
    Console.WriteLine(result.BarcodeType); // QRCode, Code128, EAN13, etc.
}

Imports IronBarCode

' Reading a QR code — no separate library required
Dim results = BarcodeReader.Read("qr.png")
For Each result In results
    Console.WriteLine(result.Text)        ' decoded value
    Console.WriteLine(result.BarcodeType) ' QRCode, Code128, EAN13, etc.
Next

using QRCoder;

// 二维码 is limited to QR — other formats require separate packages
var qrGenerator = new QRCodeGenerator();
var qr = qrGenerator.CreateQrCode("scan-to-track", QRCodeGenerator.ECCLevel.M);

// 代码 128 requires a different library (e.g., NetBarcode)
// 数据矩阵 requires yet another library
// Reading any format requires yet another library

Imports QRCoder

' 二维码 is limited to QR — other formats require separate packages
Dim qrGenerator As New QRCodeGenerator()
Dim qr = qrGenerator.CreateQrCode("scan-to-track", QRCodeGenerator.ECCLevel.M)

' 代码 128 requires a different library (e.g., NetBarcode)
' 数据矩阵 requires yet another library
' Reading any format requires yet another library

using IronBarCode;

// All formats — one API, one package
BarcodeWriter.CreateBarcode("scan-to-track", BarcodeEncoding.QRCode)
    .SaveAsPng("campaign-qr.png");

BarcodeWriter.CreateBarcode("SHIP-12345", BarcodeEncoding.Code128)
    .SaveAsPng("shipping-label.png");

BarcodeWriter.CreateBarcode("5901234123457", BarcodeEncoding.EAN13)
    .SaveAsPng("product-code.png");

BarcodeWriter.CreateBarcode("LOT-ABC-123", BarcodeEncoding.DataMatrix)
    .SaveAsPng("pharma-code.png");

Imports IronBarCode

' All formats — one API, one package
BarcodeWriter.CreateBarcode("scan-to-track", BarcodeEncoding.QRCode) _
    .SaveAsPng("campaign-qr.png")

BarcodeWriter.CreateBarcode("SHIP-12345", BarcodeEncoding.Code128) _
    .SaveAsPng("shipping-label.png")

BarcodeWriter.CreateBarcode("5901234123457", BarcodeEncoding.EAN13) _
    .SaveAsPng("product-code.png")

BarcodeWriter.CreateBarcode("LOT-ABC-123", BarcodeEncoding.DataMatrix) _
    .SaveAsPng("pharma-code.png")