如何在 C# Windows 应用程序中生成 QR 代码？

您可以使用 IronBarcode 库在 C# Windows 应用程序中生成 QR 代码，方法是利用 QRCodeWriter.CreateQrCode 方法。这允许您从文本输入中生成 QR 代码并将其保存为 PNG 文件。

using IronBarcode 进行 QR 代码生成的好处是什么？

IronBarcode 提供了一个用户友好的 API，用于 QR 代码生成，具有高精度和低错误率。它还支持添加徽标到 QR 代码以及将 QR 代码保存为 PDF 或 HTML 文件等附加功能。

如何在 Microsoft Visual Studio 中设置用于生成 QR 代码的 Windows 窗体应用程序？

要在 Microsoft Visual Studio 中设置一个 Windows 窗体应用程序，请打开 Visual Studio，选择“创建新项目”，选择“Windows 窗体应用程序模板”，命名您的项目，选择目标 .NET Framework，然后点击“创建”。

在 C# 项目中安装 QR 代码库的过程是什么？

IronBarcode 库可以通过包管理器控制台、NuGet 包管理器解决方案，或通过直接下载 IronBarCode.DLL 来安装到 C# 项目中。

我能否使用 IronBarcode 为 QR 代码添加徽标？

是的，您可以使用 IronBarcode 库的 CreateQrCodeWithLogo 方法从 QRCodeWriter 类中选择计算机中的图像来为 QR 代码添加徽标。

IronBarcode 是否可以将 QR 代码转换为 PDF 或 HTML？

是的，IronBarcode 允许您使用 SaveAsPdf 将 QR 代码转换为 PDF，或使用 SaveAsHtmlFile 将其转换为 HTML 文件。

using IronBarcode 生成 QR 代码需要哪些命名空间？

要使用 IronBarcode 生成 QR 代码，您需要包含 'IronBarCode' 命名空间以及系统命名空间，例如 System、System.Drawing 和 System.Linq。

IronBarcode 提供了哪些附加条形码功能？

IronBarcode 支持从图像读取各种条形码格式，提供增强的精度选项以及改进条形码识别的滤波器应用。

在哪里可以找到有关使用 IronBarcode 的更详细的文档？

您可以访问 IronBarcode 文档网站，获取有关使用该库进行 QR 代码生成和其他条形码相关任务的更详细信息和指导。

C#条码库

Explore IronBarcode 免费试用

条形码快速入门

查看所有%s代码示例

using IronBarCode;
using System.Drawing;

// Reading a barcode is easy with IronBarcode!
var resultFromFile = BarcodeReader.Read(@"file/barcode.png"); // From a file
var resultFromBitMap = BarcodeReader.Read(new Bitmap("barcode.bmp")); // From a bitmap
var resultFromImage = BarcodeReader.Read(Image.FromFile("barcode.jpg")); // From an image file
var resultFromPdf = BarcodeReader.ReadPdf(@"file/mydocument.pdf"); // From PDF use ReadPdf

// To configure and fine-tune barcode reading, utilize the BarcodeReaderOptions class
var myOptionsExample = new BarcodeReaderOptions
{
    // Choose a reading speed from: Faster, Balanced, Detailed, ExtremeDetail
    // There is a tradeoff in performance as more detail is set
    Speed = ReadingSpeed.Balanced,

    // Reader will stop scanning once a single barcode is found (if set to true)
    ExpectMultipleBarcodes = true,

    // By default, all barcode formats are scanned for
    // Specifying a subset of barcode types to search for would improve performance
    ExpectBarcodeTypes = BarcodeEncoding.AllOneDimensional,

    // Utilize multiple threads to read barcodes from multiple images in parallel
    Multithreaded = true,

    // Maximum threads for parallelized barcode reading
    // Default is 4
    MaxParallelThreads = 2,

    // The area of each image frame in which to scan for barcodes
    // Specifying a crop area will significantly improve performance and avoid noisy parts of the image
    CropArea = new Rectangle(),

    // Special setting for Code39 barcodes
    // If a Code39 barcode is detected, try to read with both the base and extended ASCII character sets
    UseCode39ExtendedMode = true
};

// Read with the options applied
var results = BarcodeReader.Read("barcode.png", myOptionsExample);

// Create a barcode with one line of code
var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8);

// After creating a barcode, we may choose to resize
myBarcode.ResizeTo(400, 100);

// Save our newly-created barcode as an image
myBarcode.SaveAsImage("EAN8.jpeg");

// Get the barcode as an image for further processing
var myBarcodeImage = myBarcode.Image;

using IronBarCode;
using System.Drawing;

// Reading a barcode is easy with IronBarcode!
var resultFromFile = BarcodeReader.Read(@"file/barcode.png"); // From a file
var resultFromBitMap = BarcodeReader.Read(new Bitmap("barcode.bmp")); // From a bitmap
var resultFromImage = BarcodeReader.Read(Image.FromFile("barcode.jpg")); // From an image file
var resultFromPdf = BarcodeReader.ReadPdf(@"file/mydocument.pdf"); // From PDF use ReadPdf

// To configure and fine-tune barcode reading, utilize the BarcodeReaderOptions class
var myOptionsExample = new BarcodeReaderOptions
{
    // Choose a reading speed from: Faster, Balanced, Detailed, ExtremeDetail
    // There is a tradeoff in performance as more detail is set
    Speed = ReadingSpeed.Balanced,

    // Reader will stop scanning once a single barcode is found (if set to true)
    ExpectMultipleBarcodes = true,

    // By default, all barcode formats are scanned for
    // Specifying a subset of barcode types to search for would improve performance
    ExpectBarcodeTypes = BarcodeEncoding.AllOneDimensional,

    // Utilize multiple threads to read barcodes from multiple images in parallel
    Multithreaded = true,

    // Maximum threads for parallelized barcode reading
    // Default is 4
    MaxParallelThreads = 2,

    // The area of each image frame in which to scan for barcodes
    // Specifying a crop area will significantly improve performance and avoid noisy parts of the image
    CropArea = new Rectangle(),

    // Special setting for Code39 barcodes
    // If a Code39 barcode is detected, try to read with both the base and extended ASCII character sets
    UseCode39ExtendedMode = true
};

// Read with the options applied
var results = BarcodeReader.Read("barcode.png", myOptionsExample);

// Create a barcode with one line of code
var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8);

// After creating a barcode, we may choose to resize
myBarcode.ResizeTo(400, 100);

// Save our newly-created barcode as an image
myBarcode.SaveAsImage("EAN8.jpeg");

// Get the barcode as an image for further processing
var myBarcodeImage = myBarcode.Image;

PM >Install-Package BarCode

Install-Package BarCode

USING IRONBARCODE

How to Generate QR Code in C# Windows Applications

Curtis Chau

Updated: 2026年5月8日

本教程提供了关于如何创建二维码的深入了解，这在工业应用和零售行业中越来越受欢迎。将使用 IronBarcode 库，这是最受欢迎和最强大的库之一，来演示如何生成二维码。

如何在C# Windows窗体应用程序中生成二维码

在 Microsoft Visual Studio 中创建 Windows Forms 应用程序
安装二维码库
导入命名空间以创建条形码
用一行代码创建二维码
向二维码图片添加徽标
将图片保存为 PDF 或 HTML

1. 在 Microsoft Visual Studio 中创建 Windows Forms 应用程序

打开 Visual Studio > 点击创建新项目 > 选择 Windows Forms 应用程序模板 > 按下一步 > 命名项目 > 按下一步 > 选择目标 .NET Framework > 点击创建按钮。

在创建项目之后，使用Visual Studio工具箱中的以下控件设计表单：Button。

如何在C# Windows应用程序中生成二维码，图1：用于加载图像和生成二维码的Windows窗体应用程序UI 一个用于加载图像和生成二维码的 Windows Forms 应用程序 UI

2. 在C#中安装QR码生成器.NET库

第一步是安装条形码库。您可以通过以下三种方法之一来执行此操作：

2.1. 包管理器控制台

在包管理器控制台中写下以下命令。它将为您下载并安装程序包。

PM > Install-Package BarCode

Install-Package BarCode

如何在C# Windows应用程序中生成二维码，图2：包管理器控制台UI中的安装进度 包管理器控制台 UI 中的安装进度

2.2. NuGet 包管理器解决方案

您还可以使用 NuGet 包解决方案安装条形码库。只需按照这些步骤操作：

点击工具 > NuGet程序包管理器 > 管理解决方案的NuGet程序包。

这将为您打开 NuGet 包管理器。点击浏览，搜索 BarCode，然后安装类库。

如何在C# Windows应用程序中生成二维码，图3：在NuGet包管理器中找到BarCode库 在 NuGet 包管理器中找到 BarCode 库

2.3. 从链接下载

作为替代，IronBarCode.Dll 可以下载并添加到您的项目中，作为 .NET Barcode DLL 的引用。

3. 导入命名空间

对于本教程，为了确保有足够的引用，需要IronBarCode命名空间以及其他系统程序集。

using IronBarCode; // Provides functionality for QR and barcode generation
using System; // Contains fundamental classes and base classes that define commonly-used value and reference data types
using System.Drawing; // Provides access to GDI+ basic graphic functionality
using System.Linq; // Provides classes and interfaces that support queries

using IronBarCode; // Provides functionality for QR and barcode generation
using System; // Contains fundamental classes and base classes that define commonly-used value and reference data types
using System.Drawing; // Provides access to GDI+ basic graphic functionality
using System.Linq; // Provides classes and interfaces that support queries

Imports IronBarCode ' Provides functionality for QR and barcode generation
Imports System ' Contains fundamental classes and base classes that define commonly-used value and reference data types
Imports System.Drawing ' Provides access to GDI+ basic graphic functionality
Imports System.Linq ' Provides classes and interfaces that support queries

Imports IronBarCode ' Provides functionality for QR and barcode generation
Imports System ' Contains fundamental classes and base classes that define commonly-used value and reference data types
Imports System.Drawing ' Provides access to GDI+ basic graphic functionality
Imports System.Linq ' Provides classes and interfaces that support queries

4. 用 1 行代码创建二维码

以下示例代码允许您用一行代码生成二维码图像。在文本框中输入您想要生成二维码的文本。将此代码放在"生成 PNG"按钮单击事件中。二维码图像可以保存为 PNG 格式。

// Simple QR Code generation
private void button1_Click(object sender, EventArgs e)
{
    // Generate a QR code from the text provided in the TextBox
    GeneratedBarcode qrCode = QRCodeWriter.CreateQrCode(textBox1.Text);
    
    // Save the generated QR code as a PNG file
    qrCode.SaveAsPng("QrCode.png");
}

// Simple QR Code generation
private void button1_Click(object sender, EventArgs e)
{
    // Generate a QR code from the text provided in the TextBox
    GeneratedBarcode qrCode = QRCodeWriter.CreateQrCode(textBox1.Text);
    
    // Save the generated QR code as a PNG file
    qrCode.SaveAsPng("QrCode.png");
}

' Simple QR Code generation
Private Sub button1_Click(sender As Object, e As EventArgs) Handles button1.Click
    ' Generate a QR code from the text provided in the TextBox
    Dim qrCode As GeneratedBarcode = QRCodeWriter.CreateQrCode(textBox1.Text)
    
    ' Save the generated QR code as a PNG file
    qrCode.SaveAsPng("QrCode.png")
End Sub

' Simple QR Code generation
Private Sub button1_Click(sender As Object, e As EventArgs) Handles button1.Click
    ' Generate a QR code from the text provided in the TextBox
    Dim qrCode As GeneratedBarcode = QRCodeWriter.CreateQrCode(textBox1.Text)
    
    ' Save the generated QR code as a PNG file
    qrCode.SaveAsPng("QrCode.png")
End Sub

以下是二维码生成器的输出：

如何在C# Windows应用程序中生成二维码，图4：https://ironsoftware.com/csharp/barcode/docs/ 的二维码 QR code of: https://ironsoftware.com/csharp/barcode/docs/****

5. 向二维码图像添加徽标

通过使用 CreateQrCodeWithLogo 方法从 QRCodeWriter 类中，可以将诸如标识等额外信息添加到二维码中。示例代码展示了其简单性。

从您的计算机浏览标志，它将在PictureBox中打开。代码如下

// Open file dialog to select an image
OpenFileDialog open = new OpenFileDialog();
// Set image file filters to ensure valid image types are opened
open.Filter = "Image Files(*.jpg; *.png; *.jpeg; *.gif; *.bmp)|*.jpg; *.png; *.jpeg; *.gif; *.bmp";
if (open.ShowDialog() == DialogResult.OK) {
    // Display image in PictureBox and store file path for later use
    pictureBox1.Image = new Bitmap(open.FileName);
    // Store image file path in class data member
    ImageFileName = open.FileName;
}

// Open file dialog to select an image
OpenFileDialog open = new OpenFileDialog();
// Set image file filters to ensure valid image types are opened
open.Filter = "Image Files(*.jpg; *.png; *.jpeg; *.gif; *.bmp)|*.jpg; *.png; *.jpeg; *.gif; *.bmp";
if (open.ShowDialog() == DialogResult.OK) {
    // Display image in PictureBox and store file path for later use
    pictureBox1.Image = new Bitmap(open.FileName);
    // Store image file path in class data member
    ImageFileName = open.FileName;
}

' Open file dialog to select an image
Dim open As New OpenFileDialog()
' Set image file filters to ensure valid image types are opened
open.Filter = "Image Files(*.jpg; *.png; *.jpeg; *.gif; *.bmp)|*.jpg; *.png; *.jpeg; *.gif; *.bmp"
If open.ShowDialog() = DialogResult.OK Then
	' Display image in PictureBox and store file path for later use
	pictureBox1.Image = New Bitmap(open.FileName)
	' Store image file path in class data member
	ImageFileName = open.FileName
End If

' Open file dialog to select an image
Dim open As New OpenFileDialog()
' Set image file filters to ensure valid image types are opened
open.Filter = "Image Files(*.jpg; *.png; *.jpeg; *.gif; *.bmp)|*.jpg; *.png; *.jpeg; *.gif; *.bmp"
If open.ShowDialog() = DialogResult.OK Then
	' Display image in PictureBox and store file path for later use
	pictureBox1.Image = New Bitmap(open.FileName)
	' Store image file path in class data member
	ImageFileName = open.FileName
End If

接下来，只需在文本框中输入文本，将此代码放在生成 PNG 按钮中，然后单击。

// Generate a QR code with a logo
GeneratedBarcode qrCode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500);
// Save the generated QR code with logo as a PNG file
qrCode.SaveAsPng("QrCodeWithImage.png");

// Generate a QR code with a logo
GeneratedBarcode qrCode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500);
// Save the generated QR code with logo as a PNG file
qrCode.SaveAsPng("QrCodeWithImage.png");

' Generate a QR code with a logo
Dim qrCode As GeneratedBarcode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500)
' Save the generated QR code with logo as a PNG file
qrCode.SaveAsPng("QrCodeWithImage.png")

' Generate a QR code with a logo
Dim qrCode As GeneratedBarcode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500)
' Save the generated QR code with logo as a PNG file
qrCode.SaveAsPng("QrCodeWithImage.png")

此代码将在条形码中添加 Iron 徽标。它会自动将其调整到合适的大小，使纯代码仍然可读，并将该徽标对齐到二维码的方格网络上，使其看起来恰当。

如何在C# Windows应用程序中生成二维码，图5：C#创建带有标志图像的二维码 C# 创建带徽标图像的二维码

6. 保存为 PDF 或 HTML 图像

最后，生成的二维码可以保存为 PDF 或 HTML 图像。最后一行代码在您的默认 PDF 浏览器中打开 PDF 以方便使用。在生成PDF按钮中添加 SaveAsPdf ，在生成HTML按钮中添加 SaveAsHtmlFile 。

// Generate a QR code with a logo
GeneratedBarcode qrCode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500);

// Save the QR code as a PDF file
qrCode.SaveAsPdf("QRWithLogo.pdf");

// Also, save the QR code as an HTML file
qrCode.SaveAsHtmlFile("QRWithLogo.html");

// Generate a QR code with a logo
GeneratedBarcode qrCode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500);

// Save the QR code as a PDF file
qrCode.SaveAsPdf("QRWithLogo.pdf");

// Also, save the QR code as an HTML file
qrCode.SaveAsHtmlFile("QRWithLogo.html");

' Generate a QR code with a logo
Dim qrCode As GeneratedBarcode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500)

' Save the QR code as a PDF file
qrCode.SaveAsPdf("QRWithLogo.pdf")

' Also, save the QR code as an HTML file
qrCode.SaveAsHtmlFile("QRWithLogo.html")

' Generate a QR code with a logo
Dim qrCode As GeneratedBarcode = QRCodeWriter.CreateQrCodeWithLogo(textBox1.Text, ImageFileName, 500)

' Save the QR code as a PDF file
qrCode.SaveAsPdf("QRWithLogo.pdf")

' Also, save the QR code as an HTML file
qrCode.SaveAsHtmlFile("QRWithLogo.html")