如何在C# Windows應用程式中生成QR Code？

您可以使用IronBarcode程式庫在C# Windows應用程式中使用 QRCodeWriter.CreateQrCode 方法生成QR Code。這可讓您從文字輸入生成QR Code並將其儲存為PNG檔案。

使用IronBarcode生成QR Code的好處是什麼？

IronBarcode提供使用者友好的API，用於生成高精確度和低錯誤率的QR Code。它還支持其他功能，如在QR Code中新增標誌和將QR Code儲存為PDF或HTML文件。

如何在Microsoft Visual Studio中設定Windows Forms應用程式以生成QR Code？

要在Microsoft Visual Studio中設定Windows Forms應用程式，開啟Visual Studio，選擇『建立新專案』，選擇『Windows Forms應用程式範本』，為專案命名，選擇目標.NET Framework，然後點擊『建立』。

在C#專案中安裝QR Code程式庫的過程是什麼？

IronBarcode程式庫可以通過Package Manager Console、NuGet Package Manager Solution或直接下載IronBarCode.DLL安裝到C#專案中。

我可以使用IronBarcode為QR Code新增標誌嗎？

是的，您可以使用IronBarcode程式庫，利用 QRCodeWriter 類的 CreateQrCodeWithLogo 方法，從電腦中選擇一個圖像來為QR Code新增標誌。

可以使用IronBarcode將QR Code轉換為PDF或HTML嗎？

是的，IronBarcode允許您使用 SaveAsPdf 將QR Code轉換為PDF，或使用 SaveAsHtmlFile 轉換為HTML文件。

生成QR Code所需的命名空間是什麼？

要使用IronBarcode生成QR Code，您需要包含'IronBarCode'命名空間，以及System、System.Drawing和System.Linq等系統命名空間。

IronBarcode提供了哪些其他條碼功能？

IronBarcode支持從圖像中讀取各種條碼格式，提供增強精確度和應用過濾器以改善條碼識別的選項。

我可以在哪裡找到有關使用IronBarcode的更詳細文件？

您可以存取IronBarcode文件網站，獲取有關使用該程式庫生成QR Code和其他條碼相關任務的更詳細資訊和指導。

C# 條碼程式庫

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查看所有程式碼範例

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

使用IRONBARCODE

如何在C# Windows應用程式中生成QR碼

Curtis Chau

Updated: 2026年5月8日

本教程深入介紹如何建立QR碼，這在工業應用和零售行業中越來越受歡迎。將使用最受歡迎和強大的程式庫之一IronBarcode程式庫，來演示如何生成QR碼。

如何在C# Windows Forms應用程式中生成QR碼

在Microsoft Visual Studio中建立一個Windows Forms應用程式
安裝QR碼程式庫
匯入命名空間以建立條形碼
用一行程式碼建立QR碼
向QR碼圖像新增標誌
將圖像儲存為PDF或HTML

1. 在Microsoft Visual Studio中建立一個Windows Forms應用程式

打開Visual Studio > 點擊建立新專案 > 選擇Windows Forms應用程式模板 > 按下一步 > 為專案命名 > 按下一步 > 選擇您的目標.NET Framework > 點擊建立按鈕。

建立專案後，使用Visual Studio工具箱中的以下控件設計表單：PictureBox, Label, TextBox, 和 Button。

如何在C# Windows應用程式中生成QR碼，圖1：用於載入圖像和生成QR碼的Windows Forms應用程式使用者介面 用於載入圖像和生成QR碼的Windows Forms應用程式使用者介面

2. 在C#中安裝QR碼生成器.NET程式庫

第一步是安裝條形碼程式庫。您可以使用以下三種方法之一進行安裝：

2.1. 套件管理器控制台

在套件管理器主控台中輸入以下命令。它會為您下載並安裝該套件。

PM > Install-Package BarCode

Install-Package BarCode

如何在C# Windows應用程式中生成QR碼，圖2：套件管理器控制台使用者介面中的安裝進度 套件管理器控制台使用者介面中的安裝進度

2.2. NuGet套件管理解決方案

您還可以使用NuGet套件解決方案安裝條形碼程式庫。只需遵循以下步驟：

點擊工具 > NuGet 套件管理器 > 為解決方案管理 NuGet 套件。

這將為您打開NuGet套件管理器。點擊瀏覽，搜索BarCode，然後安裝類庫。

如何在C# Windows應用程式中生成QR碼，圖3：在NuGet套件管理器中查找BarCode程式庫 在NuGet套件管理器中查找BarCode程式庫

2.3. 從連結下載

作為替代方案，可以從.NET Barcode DLL下載IronBarCode.Dll並新增到您的專案中作為參考。

3. 匯入命名空間

在本教程中，為確保足夠的參考，需要IronBarCode命名空間以及其他系統程式集。

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行程式碼建立QR碼

以下範例程式碼允許您僅用一行程式碼生成一個QR碼圖像。在您想要生成QR碼的文字框中輸入所需的文字。將此程式碼放在"生成PNG"按鈕的點擊事件中。 QR碼圖像可以儲存為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

這是QR碼生成器的輸出：

如何在C# Windows應用程式中生成QR碼，圖4：QR碼：https://ironsoftware.com/csharp/barcode/docs/ QR code of: https://ironsoftware.com/csharp/barcode/docs/****

5. 向QR碼圖像新增標誌

通過使用CreateQrCodeWithLogo方法和QRCodeWriter類，可以向QR碼新增額外資訊，例如一個標誌。範例程式碼說明了這有多簡單。

從您的電腦中瀏覽標誌，然後它將在PictureBox中開啟。程式碼如下所示：

// 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

接下來，只需在文字框中輸入文字，將此程式碼放在生成PNG按鈕中，然後點擊。

// 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")

此程式碼在條形碼中新增了Iron標誌。它會自動調整到適當的大小，使純碼仍可讀，並將該標誌對齊到QR碼的正方形網格上，使其看起來適宜。

如何在C# Windows應用程式中生成QR碼，圖5：C#建立包含標誌圖像的QR碼 C#建立包含標誌圖像的QR碼

6. 儲存為PDF或HTML圖像

最後，生成的QR碼可以儲存為PDF或HTML圖像。最後一行程式碼將PDF打開於您預設的PDF瀏覽器中以方便查看。在生成PDF按鈕中新增SaveAsPdf和在生成HTML按鈕中新增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")