如何在 C# 中生成 QR code？

您可以使用 IronBarcode 的 `BarcodeWriter` 類別在 C# 中生成 QR code。只需定義 QR code 內容，自訂顏色和大小等選項，然後調用 'Write' 方法即可生成 QR code。

是什麼讓 IronBarcode 比 ZXing.NET 更加強大？

IronBarcode 提供了增強的功能，如支援更多條碼格式、先進的圖像處理功能如旋轉和透視校正，以及建立帶有徽標和顏色的裝飾 QR code 的能力。它還跨平台相容，並提供商業支援。

我可以使用 IronBarcode 從有缺陷的圖像中讀取條碼嗎？

可以，IronBarcode 可以使用旋轉校正、透視校正和數位噪音減少等功能從有缺陷的圖像中讀取條碼，這使得其對於掃描或相片圖像非常有效。

在 C# 中讀取條碼的步驟是什麼？

要在 C# 中讀取條碼，使用 IronBarcode 的 `BarcodeReader` 類別。透過 `BarcodeReader.QuicklyReadOneBarcode` 方法載入包含條碼的圖像，該方法將解碼並返回已識別的條碼內容。

IronBarcode 如何處理跨平台相容性？

IronBarcode 支援 Windows、macOS、Linux 和 Azure 的跨平台相容性，允許您將條碼生成和讀取功能整合到不同的 .NET 應用程式中，且無需第三方依賴。

IronBarcode 提供哪些自訂 QR code 的選項？

IronBarcode 允許透過調整顏色、新增品牌徽標和配置錯誤校正級別來自訂 QR code，以平衡大小和可讀性，滿足各種美學和功能需求的靈活性。

在商業應用中使用 IronBarcode 是否有授權費用？

IronBarcode 提供不同的授權選項，包括適合商業應用的永久授權。這與 ZXing.NET 免費但對商業用途有限制不同。

使用條碼庫時常見的故障排除場景有哪些？

常見問題可能包括由於圖像質量不佳、未支援的條碼格式或配置錯誤引起的不正確條碼識別。IronBarcode 的先進圖像處理可以幫助減輕某些識別問題。

為什麼有人會選擇 IronBarcode 而不是 ZXing.NET 來處理條碼？

IronBarcode 提供更強大的 API、更好的錯誤處理、廣泛的條碼格式支援，以及生成視覺化自訂 QR code 的功能，所有這些都增強了商業授權和專業支援。

如何在 .NET 專案中安裝 IronBarcode？

您可以使用 Visual Studio 中的 NuGet 套件管理器在 .NET 專案中安裝 IronBarcode，只需搜尋 'IronBarcode' 並將其新增到您的專案中，確保輕鬆整合和更新。

C# 條碼程式庫

Explore IronBarcode 開始免費試用

條碼快速入門

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

與其他組件的比較

LEADTOOLS Barcode對比IronBarcode：企業比較指南

Curtis Chau

Updated: 2026年4月21日

條碼掃描儀可能並不總是適合我們的應用程式。您可能已經擁有條碼的數字圖像，並希望知道它在英文文字中代表什麼。此外，這個掃描儀僅能讀取1D條碼，這些條碼包含資料量有限，且僅能在Windows RT Class程式庫中使用。 2D條碼（也稱為QR碼）現在很常見，可以容納更多的資訊。

可以建立一個基於C#的應用程式來使用簡單的API調用和一些編程步驟讀取條碼。 .NET支持的應用程式可以在Windows、macOS或Linux上運行，而無需依賴任何第三方工具或API。

本文將比較兩個功能最強大的.NET Core應用程式庫，用於以編程方式讀取條碼。這兩個程式庫是IronBarcode和ZXing.NET。我們將看到什麼使IronBarcode比ZXing.NET更強大和穩健。

如何在C#中使用Zxing生成條碼

安裝C#程式庫以生成條碼
從BarcodeWriterPixelData類建立一個新物件來自定義條碼
使用Format屬性設置條碼型別
實例化QrCodeEncodingOptions類以進一步自定義高度、寬度和邊距
使用步驟2中的物件的Write方法在C#中生成條碼

什麼是ZXing.NET

ZXing.NET是一個解碼和生成條碼的程式庫（如QR碼、PDF 417、EAN、UPC、Aztec、Data Matrix、Codabar）。 ZXing，意思是"斑馬過街"，是一個基於Java的開源程式庫，支持多種1D和2D條碼格式。

其基本特徵如下：

能夠儲存URL、聯繫方式、日曆事件等
為Java SE應用程式量身定制
允許通過intent整合條碼掃描儀
是一個簡單的Google Glass應用

什麼是IronBarcode

IronBarcode是一個C#程式庫，允許程式設計師讀取和生成條碼。作為領先的條碼程式庫，IronBarcode支持多種一維和二維條碼，包括裝飾（彩色和品牌）QR碼。它支持.NET Standard和Core版本2及更高版本，允許跨平台在Azure、Linux、macOS、Windows和Web上使用。 IronBarcode是.NET系統中一個知名的類程式庫或組件，允許C#、VB.NET和F#開發者使用標準化的編程語言。它允許客戶瀏覽掃描器標籤並建立新的標準化標籤。它在處理2D條碼和其他3D標準化條碼時效果非常好。

IronBarcode現在支持2D條碼。它提供優化這些程式碼的顏色、樣式和像素化的功能，並能夠為其新增標誌，用於列印或廣告材料。此程式庫還可以讀取傾斜和變形的條碼，這是其他條碼軟體可能無法讀到的。

安裝IronBarcode和ZXing.NET

ZXing.NET的安裝

要使用ZXing.NET程式庫，請在ASP.NET Core應用程式中使用NuGet套件管理器控制台安裝以下兩個套件：

1. ZXing.Net

PM > Install-Package ZXing.Net

Install-Package ZXing.Net

2. ZXing.Net.Bindings.CoreCompat.System.Drawing

PM > Install-Package ZXing.Net.Bindings.CoreCompat.System.Drawing -Version 0.16.5-beta

Install-Package ZXing.Net.Bindings.CoreCompat.System.Drawing -Version 0.16.5-beta

或者，使用NuGet套件管理器將ZXing.NET安裝到您的項目中。為此，請轉到工具 > NuGet包管理器 > 為解決方案管理NuGet包...，然後切換到"瀏覽"標籤，並搜索"ZXing.NET"。

ASP.NET Web應用程式

IronBarcode的安裝

使用NuGet套件管理器安裝IronBarcode，或從產品網站直接下載DLL。 IronBarcode命名空間包含所有IronBarcode類。

IronBarcode可以在Visual Studio中使用NuGet套件管理器安裝：套件名稱為"Barcode"。

PM > Install-Package BarCode

Install-Package BarCode

建立2D條碼

使用ZXing.NET

首先，在項目文件的根文件夾內建立一個名為'qrr'的新文件夾。

然後我們將建立QR文件，並將圖像系統文件儲存在'qrr'文件夾內。

在控制器中，按照以下顯示的源程式碼新增GenerateFile()方法。

public ActionResult GenerateFile()
{
    return View();
}

[HttpPost]
public ActionResult GenerateFile(string qrText)
{
    Byte [] byteArray;
    var width = 250; // width of the QR Code
    var height = 250; // height of the QR Code
    var margin = 0;
    
    // BarcodeWriterPixelData acts as a QR code generator
    var qrCodeWriter = new ZXing.BarcodeWriterPixelData
    {
        Format = ZXing.BarcodeFormat.QR_CODE,
        Options = new QrCodeEncodingOptions
        {
            Height = height,
            Width = width,
            Margin = margin
        }
    };
    var pixelData = qrCodeWriter.Write(qrText);

    // creating a PNG bitmap from the raw pixel data; if only black and white colors are used it makes no difference if the raw pixel data is BGRA oriented and the bitmap is initialized with RGB
    using (var bitmap = new System.Drawing.Bitmap(pixelData.Width, pixelData.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb))
    {
        using (var ms = new MemoryStream())
        {
            var bitmapData = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, pixelData.Width, pixelData.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
            try
            {
                // we assume that the row stride of the bitmap is aligned to 4 byte multiplied by the width of the image
                System.Runtime.InteropServices.Marshal.Copy(pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length);
            }
            finally
            {
                bitmap.UnlockBits(bitmapData);
           }

            // Save to folder
            string fileGuid = Guid.NewGuid().ToString().Substring(0, 4);
            bitmap.Save(Server.MapPath("~/qrr") + "/file-" + fileGuid + ".png", System.Drawing.Imaging.ImageFormat.Png);

            // Save to stream as PNG
            bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
            byteArray = ms.ToArray();
        }
    }
    return View(byteArray);
}

public ActionResult GenerateFile()
{
    return View();
}

[HttpPost]
public ActionResult GenerateFile(string qrText)
{
    Byte [] byteArray;
    var width = 250; // width of the QR Code
    var height = 250; // height of the QR Code
    var margin = 0;
    
    // BarcodeWriterPixelData acts as a QR code generator
    var qrCodeWriter = new ZXing.BarcodeWriterPixelData
    {
        Format = ZXing.BarcodeFormat.QR_CODE,
        Options = new QrCodeEncodingOptions
        {
            Height = height,
            Width = width,
            Margin = margin
        }
    };
    var pixelData = qrCodeWriter.Write(qrText);

    // creating a PNG bitmap from the raw pixel data; if only black and white colors are used it makes no difference if the raw pixel data is BGRA oriented and the bitmap is initialized with RGB
    using (var bitmap = new System.Drawing.Bitmap(pixelData.Width, pixelData.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb))
    {
        using (var ms = new MemoryStream())
        {
            var bitmapData = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, pixelData.Width, pixelData.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
            try
            {
                // we assume that the row stride of the bitmap is aligned to 4 byte multiplied by the width of the image
                System.Runtime.InteropServices.Marshal.Copy(pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length);
            }
            finally
            {
                bitmap.UnlockBits(bitmapData);
           }

            // Save to folder
            string fileGuid = Guid.NewGuid().ToString().Substring(0, 4);
            bitmap.Save(Server.MapPath("~/qrr") + "/file-" + fileGuid + ".png", System.Drawing.Imaging.ImageFormat.Png);

            // Save to stream as PNG
            bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
            byteArray = ms.ToArray();
        }
    }
    return View(byteArray);
}

Public Function GenerateFile() As ActionResult
    Return View()
End Function

<HttpPost>
Public Function GenerateFile(qrText As String) As ActionResult
    Dim byteArray As Byte()
    Dim width = 250 ' width of the QR Code
    Dim height = 250 ' height of the QR Code
    Dim margin = 0

    ' BarcodeWriterPixelData acts as a QR code generator
    Dim qrCodeWriter = New ZXing.BarcodeWriterPixelData With {
        .Format = ZXing.BarcodeFormat.QR_CODE,
        .Options = New QrCodeEncodingOptions With {
            .Height = height,
            .Width = width,
            .Margin = margin
        }
    }
    Dim pixelData = qrCodeWriter.Write(qrText)

    ' creating a PNG bitmap from the raw pixel data; if only black and white colors are used it makes no difference if the raw pixel data is BGRA oriented and the bitmap is initialized with RGB
    Using bitmap = New System.Drawing.Bitmap(pixelData.Width, pixelData.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
        Using ms = New MemoryStream()
            Dim bitmapData = bitmap.LockBits(New System.Drawing.Rectangle(0, 0, pixelData.Width, pixelData.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
            Try
                ' we assume that the row stride of the bitmap is aligned to 4 byte multiplied by the width of the image
                System.Runtime.InteropServices.Marshal.Copy(pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length)
            Finally
                bitmap.UnlockBits(bitmapData)
            End Try

            ' Save to folder
            Dim fileGuid As String = Guid.NewGuid().ToString().Substring(0, 4)
            bitmap.Save(Server.MapPath("~/qrr") & "/file-" & fileGuid & ".png", System.Drawing.Imaging.ImageFormat.Png)

            ' Save to stream as PNG
            bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png)
            byteArray = ms.ToArray()
        End Using
    End Using
    Return View(byteArray)
End Function

Public Function GenerateFile() As ActionResult
    Return View()
End Function

<HttpPost>
Public Function GenerateFile(qrText As String) As ActionResult
    Dim byteArray As Byte()
    Dim width = 250 ' width of the QR Code
    Dim height = 250 ' height of the QR Code
    Dim margin = 0

    ' BarcodeWriterPixelData acts as a QR code generator
    Dim qrCodeWriter = New ZXing.BarcodeWriterPixelData With {
        .Format = ZXing.BarcodeFormat.QR_CODE,
        .Options = New QrCodeEncodingOptions With {
            .Height = height,
            .Width = width,
            .Margin = margin
        }
    }
    Dim pixelData = qrCodeWriter.Write(qrText)

    ' creating a PNG bitmap from the raw pixel data; if only black and white colors are used it makes no difference if the raw pixel data is BGRA oriented and the bitmap is initialized with RGB
    Using bitmap = New System.Drawing.Bitmap(pixelData.Width, pixelData.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
        Using ms = New MemoryStream()
            Dim bitmapData = bitmap.LockBits(New System.Drawing.Rectangle(0, 0, pixelData.Width, pixelData.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
            Try
                ' we assume that the row stride of the bitmap is aligned to 4 byte multiplied by the width of the image
                System.Runtime.InteropServices.Marshal.Copy(pixelData.Pixels, 0, bitmapData.Scan0, pixelData.Pixels.Length)
            Finally
                bitmap.UnlockBits(bitmapData)
            End Try

            ' Save to folder
            Dim fileGuid As String = Guid.NewGuid().ToString().Substring(0, 4)
            bitmap.Save(Server.MapPath("~/qrr") & "/file-" & fileGuid & ".png", System.Drawing.Imaging.ImageFormat.Png)

            ' Save to stream as PNG
            bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png)
            byteArray = ms.ToArray()
        End Using
    End Using
    Return View(byteArray)
End Function

剩下的唯一更改是將QR碼文件保存到'qrr'文件夾中。這是使用下面的兩行程式碼完成的。

string fileGuid = Guid.NewGuid().ToString().Substring(0, 4);
bitmap.Save(Server.MapPath("~/qrr") + "/file-" + fileGuid + ".png", System.Drawing.Imaging.ImageFormat.Png);

string fileGuid = Guid.NewGuid().ToString().Substring(0, 4);
bitmap.Save(Server.MapPath("~/qrr") + "/file-" + fileGuid + ".png", System.Drawing.Imaging.ImageFormat.Png);

Dim fileGuid As String = Guid.NewGuid().ToString().Substring(0, 4)
bitmap.Save(Server.MapPath("~/qrr") & "/file-" & fileGuid & ".png", System.Drawing.Imaging.ImageFormat.Png)

Dim fileGuid As String = Guid.NewGuid().ToString().Substring(0, 4)
bitmap.Save(Server.MapPath("~/qrr") & "/file-" & fileGuid & ".png", System.Drawing.Imaging.ImageFormat.Png)

接下來，您必須建立GenerateFile視圖，並在其中包含以下程式碼。 GenerateFile視圖與Index視圖相同。

@model Byte []
@using (Html.BeginForm(null, null, FormMethod.Post))
{
    <table>
        <tbody>
            <tr>
                <td>
                    <label>Enter text for creating QR Code</label>
                </td>
                <td>
                <input type="text" name="qrText" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <button>Submit</button>
                </td>
            </tr>
        </tbody>
    </table>
}
@{
    if (Model != null)
    {
        <h3>QR Code Successfully Generated</h3>
        <img src="@String.Format("data:image/png;base64,{0}", Convert.ToBase64String(Model))" />
    }
}

@model Byte []
@using (Html.BeginForm(null, null, FormMethod.Post))
{
    <table>
        <tbody>
            <tr>
                <td>
                    <label>Enter text for creating QR Code</label>
                </td>
                <td>
                <input type="text" name="qrText" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <button>Submit</button>
                </td>
            </tr>
        </tbody>
    </table>
}
@{
    if (Model != null)
    {
        <h3>QR Code Successfully Generated</h3>
        <img src="@String.Format("data:image/png;base64,{0}", Convert.ToBase64String(Model))" />
    }
}

model Function [using](Html.BeginForm ByVal As (Nothing, Nothing, FormMethod.Post)) As Byte()
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <table> <tbody> <tr> <td> <label> Enter text for creating QR Code</label> </td> <td> <input type="text" name="qrText" /> </td> </tr> <tr> <td colspan="2"> <button> Submit</button> </td> </tr> </tbody> </table>
	"qrText" /> </td> </tr> (Of tr) <td colspan="2"> (Of button) Submit</button> </td> </tr> </tbody> </table>
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <table> <tbody> <tr> <td> <label> Enter text for creating QR Code</label> </td> <td> <input type="text" name="qrText" /> </td> </tr> <tr> <td colspan
	"text" name="qrText" /> </td> </tr> (Of tr) <td colspan
	(Of table) (Of tbody) (Of tr) (Of td) (Of label) Enter text for creating QR Code</label> </td> (Of td) <input type="text" name
End Function
@
If True Then
	If Model IsNot Nothing Then
'INSTANT VB WARNING: Instant VB cannot determine whether both operands of this division are integer types - if they are then you should use the VB integer division operator:
		(Of h3) QR Code Successfully Generated</h3> <img src="@String.Format("data:image/png
		base64,
		If True Then
			0
		End If
		", Convert.ToBase64String(Model))" />
	End If
End If

model Function [using](Html.BeginForm ByVal As (Nothing, Nothing, FormMethod.Post)) As Byte()
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <table> <tbody> <tr> <td> <label> Enter text for creating QR Code</label> </td> <td> <input type="text" name="qrText" /> </td> </tr> <tr> <td colspan="2"> <button> Submit</button> </td> </tr> </tbody> </table>
	"qrText" /> </td> </tr> (Of tr) <td colspan="2"> (Of button) Submit</button> </td> </tr> </tbody> </table>
'INSTANT VB WARNING: An assignment within expression was extracted from the following statement:
'ORIGINAL LINE: <table> <tbody> <tr> <td> <label> Enter text for creating QR Code</label> </td> <td> <input type="text" name="qrText" /> </td> </tr> <tr> <td colspan
	"text" name="qrText" /> </td> </tr> (Of tr) <td colspan
	(Of table) (Of tbody) (Of tr) (Of td) (Of label) Enter text for creating QR Code</label> </td> (Of td) <input type="text" name
End Function
@
If True Then
	If Model IsNot Nothing Then
'INSTANT VB WARNING: Instant VB cannot determine whether both operands of this division are integer types - if they are then you should use the VB integer division operator:
		(Of h3) QR Code Successfully Generated</h3> <img src="@String.Format("data:image/png
		base64,
		If True Then
			0
		End If
		", Convert.ToBase64String(Model))" />
	End If
End If

在文字框中輸入任何值，然後點擊"提交"按鈕。 QR Code將生成並保存為.PNG文件在'qrr'文件夾中。

QR碼生成器

顯示的QR碼文件

支持的條碼格式

IronBarcode支持多種常用的條碼格式，包括：

帶標誌和顏色的QR碼（包括裝飾和品牌程式碼）
包括Aztec、Data Matrix、Code 93、Code 128、RSS Expanded Databar、UPS MaxiCode和USPS、IMB（OneCode）條碼的多格式條碼
RSS-14和PDF-417堆疊線性條碼
UPCA、UPCE、EAN-8、EAN-13、Codabar、ITF、MSI和Plessey是傳統的數字條碼格式。

建立和保存條碼

using IronBarCode;
// Create a barcode and save it in various formats
var MyBarCode = BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeEncoding.Code128);
MyBarCode.SaveAsImage("MyBarCode.png");
MyBarCode.SaveAsGif("MyBarCode.gif");
MyBarCode.SaveAsHtmlFile("MyBarCode.html");
MyBarCode.SaveAsJpeg("MyBarCode.jpg");
MyBarCode.SaveAsPdf("MyBarCode.Pdf");
MyBarCode.SaveAsPng("MyBarCode.png");
MyBarCode.SaveAsTiff("MyBarCode.tiff");
MyBarCode.SaveAsWindowsBitmap("MyBarCode.bmp");

// Convert barcode to different image formats and obtain binary data
System.Drawing.Image MyBarCodeImage = MyBarCode.Image;
System.Drawing.Bitmap MyBarCodeBitmap = MyBarCode.ToBitmap();
string DataURL = MyBarCode.ToDataUrl();
string ImgTagForHTML = MyBarCode.ToHtmlTag();
byte[] PngBytes = MyBarCode.ToPngBinaryData();

// Save barcode in PDF stream
using (System.IO.Stream PdfStream = MyBarCode.ToPdfStream())
{
    // The Stream barcode image output also works for GIF, JPEG, PDF, PNG, BMP and TIFF
}

// Stamp barcode onto an existing PDF at a specific position
MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 1, 200, 50);

using IronBarCode;
// Create a barcode and save it in various formats
var MyBarCode = BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeEncoding.Code128);
MyBarCode.SaveAsImage("MyBarCode.png");
MyBarCode.SaveAsGif("MyBarCode.gif");
MyBarCode.SaveAsHtmlFile("MyBarCode.html");
MyBarCode.SaveAsJpeg("MyBarCode.jpg");
MyBarCode.SaveAsPdf("MyBarCode.Pdf");
MyBarCode.SaveAsPng("MyBarCode.png");
MyBarCode.SaveAsTiff("MyBarCode.tiff");
MyBarCode.SaveAsWindowsBitmap("MyBarCode.bmp");

// Convert barcode to different image formats and obtain binary data
System.Drawing.Image MyBarCodeImage = MyBarCode.Image;
System.Drawing.Bitmap MyBarCodeBitmap = MyBarCode.ToBitmap();
string DataURL = MyBarCode.ToDataUrl();
string ImgTagForHTML = MyBarCode.ToHtmlTag();
byte[] PngBytes = MyBarCode.ToPngBinaryData();

// Save barcode in PDF stream
using (System.IO.Stream PdfStream = MyBarCode.ToPdfStream())
{
    // The Stream barcode image output also works for GIF, JPEG, PDF, PNG, BMP and TIFF
}

// Stamp barcode onto an existing PDF at a specific position
MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 1, 200, 50);

Imports IronBarCode
' Create a barcode and save it in various formats
Private MyBarCode = BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeEncoding.Code128)
MyBarCode.SaveAsImage("MyBarCode.png")
MyBarCode.SaveAsGif("MyBarCode.gif")
MyBarCode.SaveAsHtmlFile("MyBarCode.html")
MyBarCode.SaveAsJpeg("MyBarCode.jpg")
MyBarCode.SaveAsPdf("MyBarCode.Pdf")
MyBarCode.SaveAsPng("MyBarCode.png")
MyBarCode.SaveAsTiff("MyBarCode.tiff")
MyBarCode.SaveAsWindowsBitmap("MyBarCode.bmp")

' Convert barcode to different image formats and obtain binary data
Dim MyBarCodeImage As System.Drawing.Image = MyBarCode.Image
Dim MyBarCodeBitmap As System.Drawing.Bitmap = MyBarCode.ToBitmap()
Dim DataURL As String = MyBarCode.ToDataUrl()
Dim ImgTagForHTML As String = MyBarCode.ToHtmlTag()
Dim PngBytes() As Byte = MyBarCode.ToPngBinaryData()

' Save barcode in PDF stream
Using PdfStream As System.IO.Stream = MyBarCode.ToPdfStream()
	' The Stream barcode image output also works for GIF, JPEG, PDF, PNG, BMP and TIFF
End Using

' Stamp barcode onto an existing PDF at a specific position
MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 1, 200, 50)

Imports IronBarCode
' Create a barcode and save it in various formats
Private MyBarCode = BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeEncoding.Code128)
MyBarCode.SaveAsImage("MyBarCode.png")
MyBarCode.SaveAsGif("MyBarCode.gif")
MyBarCode.SaveAsHtmlFile("MyBarCode.html")
MyBarCode.SaveAsJpeg("MyBarCode.jpg")
MyBarCode.SaveAsPdf("MyBarCode.Pdf")
MyBarCode.SaveAsPng("MyBarCode.png")
MyBarCode.SaveAsTiff("MyBarCode.tiff")
MyBarCode.SaveAsWindowsBitmap("MyBarCode.bmp")

' Convert barcode to different image formats and obtain binary data
Dim MyBarCodeImage As System.Drawing.Image = MyBarCode.Image
Dim MyBarCodeBitmap As System.Drawing.Bitmap = MyBarCode.ToBitmap()
Dim DataURL As String = MyBarCode.ToDataUrl()
Dim ImgTagForHTML As String = MyBarCode.ToHtmlTag()
Dim PngBytes() As Byte = MyBarCode.ToPngBinaryData()

' Save barcode in PDF stream
Using PdfStream As System.IO.Stream = MyBarCode.ToPdfStream()
	' The Stream barcode image output also works for GIF, JPEG, PDF, PNG, BMP and TIFF
End Using

' Stamp barcode onto an existing PDF at a specific position
MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 1, 200, 50)

另一方面，ZXing是一個基於Java的開源1D/2D條碼圖像處理程式庫。支持UPC-A、UPC-E、EAN-8、Code 93、Code 128、QR Code、Data Matrix、Aztec、PDF 417和其他條碼格式。

支持的條碼格式

使用IronBarcode建立QR碼文件

要使用IronBarcode建立QR碼，我們可以使用BarcodeWriter類。這個類引入了一些新穎和有趣的功能來建立QR碼。它使我們能夠設置QR錯誤校正等級，使您可以在QR尺寸和可讀性之間取得平衡。

using IronBarCode;
// Generate a simple QR Code image and save as PNG
QRCodeWriter.CreateQrCode("hello world", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium).SaveAsPng("MyQR.png");

using IronBarCode;
// Generate a simple QR Code image and save as PNG
QRCodeWriter.CreateQrCode("hello world", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium).SaveAsPng("MyQR.png");

Imports IronBarCode
' Generate a simple QR Code image and save as PNG
QRCodeWriter.CreateQrCode("hello world", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium).SaveAsPng("MyQR.png")

Imports IronBarCode
' Generate a simple QR Code image and save as PNG
QRCodeWriter.CreateQrCode("hello world", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium).SaveAsPng("MyQR.png")

錯誤校正允許我們指定在現實情況下讀取QR的難易度。更高等級的錯誤校正會產生更大的QR碼，並具有更多的像素和複雜性。在下面的圖像中，我們看到顯示出的QR碼文件。

A Comparison between IronBarcode and ZXing.NET, Figure 5: 支持的條碼格式

QR碼圖像

我們開始指定條碼的值以及IronBarCode.BarcodeWriterEncoding枚舉中的條碼格式。然後我們可以將其保存為一個圖像、System.Drawing.Image或Bitmap程式碼物件。

using IronBarCode;
using System.Diagnostics;

// Generate a simple BarCode image and save as PNG using the following namespaces
GeneratedBarcode MyBarCode = IronBarCode.BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeWriterEncoding.Code128);
MyBarCode.SaveAsPng("MyBarCode.png");

// This line opens the image in your default image viewer
Process.Start("MyBarCode.png");

using IronBarCode;
using System.Diagnostics;

// Generate a simple BarCode image and save as PNG using the following namespaces
GeneratedBarcode MyBarCode = IronBarCode.BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeWriterEncoding.Code128);
MyBarCode.SaveAsPng("MyBarCode.png");

// This line opens the image in your default image viewer
Process.Start("MyBarCode.png");

Imports IronBarCode
Imports System.Diagnostics

' Generate a simple BarCode image and save as PNG using the following namespaces
Dim MyBarCode As GeneratedBarcode = BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeWriterEncoding.Code128)
MyBarCode.SaveAsPng("MyBarCode.png")

' This line opens the image in your default image viewer
Process.Start("MyBarCode.png")

Imports IronBarCode
Imports System.Diagnostics

' Generate a simple BarCode image and save as PNG using the following namespaces
Dim MyBarCode As GeneratedBarcode = BarcodeWriter.CreateBarcode("https://ironsoftware.com/csharp/barcode", BarcodeWriterEncoding.Code128)
MyBarCode.SaveAsPng("MyBarCode.png")

' This line opens the image in your default image viewer
Process.Start("MyBarCode.png")

在C#中的條碼圖像建立範例

IronBarcode還支持QR碼的樣式設計，例如將標誌圖形放置在圖像正中心網格上扣緊。它還可以被著色以匹配特定品牌或圖形身份。

在下面的程式碼範例中建立一個標誌，看看使用QRCodeWriter.CreateQRCodeWithLogo方法多麼簡單。

using IronBarCode;

// Adding a Logo
var MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500);
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen);

using IronBarCode;

// Adding a Logo
var MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500);
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen);

Imports IronBarCode

' Adding a Logo
Private MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500)
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen)

Imports IronBarCode

' Adding a Logo
Private MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500)
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen)

建立帶有標誌圖像的QR碼

最後，我們將生成的QR碼保存為一個PDF文件。為了您的方便，最後一行程式碼將QR碼保存為HTML文件。

using IronBarCode;

// Adding a Logo
var MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500);
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen);

// Save as PDF
MyQRWithLogo.SaveAsPdf("MyQRWithLogo.pdf");

// Also Save as HTML
MyQRWithLogo.SaveAsHtmlFile("MyQRWithLogo.html");

using IronBarCode;

// Adding a Logo
var MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500);
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen);

// Save as PDF
MyQRWithLogo.SaveAsPdf("MyQRWithLogo.pdf");

// Also Save as HTML
MyQRWithLogo.SaveAsHtmlFile("MyQRWithLogo.html");

Imports IronBarCode

' Adding a Logo
Private MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500)
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen)

' Save as PDF
MyQRWithLogo.SaveAsPdf("MyQRWithLogo.pdf")

' Also Save as HTML
MyQRWithLogo.SaveAsHtmlFile("MyQRWithLogo.html")

Imports IronBarCode

' Adding a Logo
Private MyQRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/csharp/barcode/", "visual-studio-logo.png", 500)
MyQRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkGreen)

' Save as PDF
MyQRWithLogo.SaveAsPdf("MyQRWithLogo.pdf")

' Also Save as HTML
MyQRWithLogo.SaveAsHtmlFile("MyQRWithLogo.html")

下面我們看看如何用一行程式碼建立、設計和導出條碼。

IronBarcode包含一個與System.Linq相似的流暢API。我們建立一個條碼，設置其邊距，並通過連結方法調用將其導出為位圖，只需一行程式碼。這非常有用，並使程式碼更易讀。

using IronBarCode;
using System.Drawing;

// Fluent API for Barcode image generation
string MyValue = "https://ironsoftware.com/csharp/barcode";
Bitmap BarcodeBmp = IronBarCode.BarcodeWriter.CreateBarcode(MyValue, BarcodeEncoding.PDF417)
    .ResizeTo(300, 200)
    .SetMargins(100)
    .ToBitmap();

using IronBarCode;
using System.Drawing;

// Fluent API for Barcode image generation
string MyValue = "https://ironsoftware.com/csharp/barcode";
Bitmap BarcodeBmp = IronBarCode.BarcodeWriter.CreateBarcode(MyValue, BarcodeEncoding.PDF417)
    .ResizeTo(300, 200)
    .SetMargins(100)
    .ToBitmap();

Imports IronBarCode
Imports System.Drawing

' Fluent API for Barcode image generation
Dim MyValue As String = "https://ironsoftware.com/csharp/barcode"
Dim BarcodeBmp As Bitmap = IronBarCode.BarcodeWriter.CreateBarcode(MyValue, BarcodeEncoding.PDF417) _
    .ResizeTo(300, 200) _
    .SetMargins(100) _
    .ToBitmap()

Imports IronBarCode
Imports System.Drawing

' Fluent API for Barcode image generation
Dim MyValue As String = "https://ironsoftware.com/csharp/barcode"
Dim BarcodeBmp As Bitmap = IronBarCode.BarcodeWriter.CreateBarcode(MyValue, BarcodeEncoding.PDF417) _
    .ResizeTo(300, 200) _
    .SetMargins(100) _
    .ToBitmap()

結果，以下展示的PDF417條碼的System.Drawing.Image出現了。

簡單的流暢PDF417條碼生成在C#中

讀取QR碼文件

使用IronBarcode讀取QR碼

當您使用IronBarcode類程式庫搭配.NET條碼閱讀器時，讀取條碼或QR碼輕而易舉。在我們的第一個例子中，我們可以看到如何用一行程式碼讀取條碼。

將掃描的Code128條碼圖像用C#掃描

我們可以獲取條碼的值、圖像、編碼型別和二進制資料（如果有的話），然後將其輸出到控制台。

using IronBarCode;
using System;

// Read a barcode or QR code from an image
BarcodeResult Result = BarcodeReader.QuicklyReadOneBarcode("GetStarted.png");
if (Result != null && Result.Text == "https://ironsoftware.com/csharp/barcode/")
{
    Console.WriteLine("GetStarted was a success.  Read Value: " + Result.Text);
}

using IronBarCode;
using System;

// Read a barcode or QR code from an image
BarcodeResult Result = BarcodeReader.QuicklyReadOneBarcode("GetStarted.png");
if (Result != null && Result.Text == "https://ironsoftware.com/csharp/barcode/")
{
    Console.WriteLine("GetStarted was a success.  Read Value: " + Result.Text);
}

Imports IronBarCode
Imports System

' Read a barcode or QR code from an image
Private Result As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("GetStarted.png")
If Result IsNot Nothing AndAlso Result.Text = "https://ironsoftware.com/csharp/barcode/" Then
	Console.WriteLine("GetStarted was a success.  Read Value: " & Result.Text)
End If

Imports IronBarCode
Imports System

' Read a barcode or QR code from an image
Private Result As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("GetStarted.png")
If Result IsNot Nothing AndAlso Result.Text = "https://ironsoftware.com/csharp/barcode/" Then
	Console.WriteLine("GetStarted was a success.  Read Value: " & Result.Text)
End If

讀取PDF內的條碼

我們將研究讀取已掃描的PDF文件，並用幾行程式碼找到所有的一維條碼。

正如您所看到的，這與從單個文件中讀取單個條碼非常相似，除了我們現在知道條碼是在哪一頁發現的。

using IronBarCode;
using System;
using System.Drawing;

// Multiple barcodes may be scanned up from a single document or image. A PDF document may also be used as the input image
PagedBarcodeResult[] PDFResults = BarcodeReader.ReadBarcodesFromPdf("MultipleBarcodes.pdf");

// Work with the results
foreach (var PageResult in PDFResults)
{
    string Value = PageResult.Value;
    int PageNum = PageResult.PageNumber;
    System.Drawing.Bitmap Img = PageResult.BarcodeImage;
    BarcodeEncoding BarcodeType = PageResult.BarcodeType;
    byte[] Binary = PageResult.BinaryValue;
    Console.WriteLine(PageResult.Value + " on page " + PageNum);
}

using IronBarCode;
using System;
using System.Drawing;

// Multiple barcodes may be scanned up from a single document or image. A PDF document may also be used as the input image
PagedBarcodeResult[] PDFResults = BarcodeReader.ReadBarcodesFromPdf("MultipleBarcodes.pdf");

// Work with the results
foreach (var PageResult in PDFResults)
{
    string Value = PageResult.Value;
    int PageNum = PageResult.PageNumber;
    System.Drawing.Bitmap Img = PageResult.BarcodeImage;
    BarcodeEncoding BarcodeType = PageResult.BarcodeType;
    byte[] Binary = PageResult.BinaryValue;
    Console.WriteLine(PageResult.Value + " on page " + PageNum);
}

Imports IronBarCode
Imports System
Imports System.Drawing

' Multiple barcodes may be scanned up from a single document or image. A PDF document may also be used as the input image
Private PDFResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesFromPdf("MultipleBarcodes.pdf")

' Work with the results
For Each PageResult In PDFResults
	Dim Value As String = PageResult.Value
	Dim PageNum As Integer = PageResult.PageNumber
	Dim Img As System.Drawing.Bitmap = PageResult.BarcodeImage
	Dim BarcodeType As BarcodeEncoding = PageResult.BarcodeType
	Dim Binary() As Byte = PageResult.BinaryValue
	Console.WriteLine(PageResult.Value & " on page " & PageNum)
Next PageResult

Imports IronBarCode
Imports System
Imports System.Drawing

' Multiple barcodes may be scanned up from a single document or image. A PDF document may also be used as the input image
Private PDFResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesFromPdf("MultipleBarcodes.pdf")

' Work with the results
For Each PageResult In PDFResults
	Dim Value As String = PageResult.Value
	Dim PageNum As Integer = PageResult.PageNumber
	Dim Img As System.Drawing.Bitmap = PageResult.BarcodeImage
	Dim BarcodeType As BarcodeEncoding = PageResult.BarcodeType
	Dim Binary() As Byte = PageResult.BinaryValue
	Console.WriteLine(PageResult.Value & " on page " & PageNum)
Next PageResult

您將獲得PDF中所有位圖條碼的結果資料。

讀取PDF記憶體儲的條碼結果

從GIF和TIFF中讀取條碼

using IronBarCode;
using System;

// Multi-frame TIFF and GIF images can also be scanned, and multiple threads will be used automatically in the background for improved performance
PagedBarcodeResult[] MultiFrameResults = BarcodeReader.ReadBarcodesFromMultiFrameTiff("Multiframe.tiff", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.High, BarcodeReader.BarcodeImageCorrection.MediumCleanPixels);
foreach (var PageResult in MultiFrameResults)
{
    // Process each page result
}

using IronBarCode;
using System;

// Multi-frame TIFF and GIF images can also be scanned, and multiple threads will be used automatically in the background for improved performance
PagedBarcodeResult[] MultiFrameResults = BarcodeReader.ReadBarcodesFromMultiFrameTiff("Multiframe.tiff", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.High, BarcodeReader.BarcodeImageCorrection.MediumCleanPixels);
foreach (var PageResult in MultiFrameResults)
{
    // Process each page result
}

Imports IronBarCode
Imports System

' Multi-frame TIFF and GIF images can also be scanned, and multiple threads will be used automatically in the background for improved performance
Private MultiFrameResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesFromMultiFrameTiff("Multiframe.tiff", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.High, BarcodeReader.BarcodeImageCorrection.MediumCleanPixels)
For Each PageResult In MultiFrameResults
	' Process each page result
Next PageResult

Imports IronBarCode
Imports System

' Multi-frame TIFF and GIF images can also be scanned, and multiple threads will be used automatically in the background for improved performance
Private MultiFrameResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesFromMultiFrameTiff("Multiframe.tiff", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.High, BarcodeReader.BarcodeImageCorrection.MediumCleanPixels)
For Each PageResult In MultiFrameResults
	' Process each page result
Next PageResult

從多幀TIFF圖像中讀取條碼

下面的例子顯示了如何從掃描的PDF中讀取QR碼和PDF-417條碼。我們設置了適當的條碼旋轉校正等級和條碼圖像校正，以輕微清理文件而不會產生重大性能損失。

using IronBarCode;
using System;

// PDF documents can also be scanned, and multiple threads will be used automatically in the background for improved performance
var ScanResults = BarcodeReader.ReadBarcodesFromPdf("Scan.pdf", BarcodeEncoding.All, BarcodeReader.BarcodeRotationCorrection.Low, BarcodeReader.BarcodeImageCorrection.LightlyCleanPixels);

// Work with the results
foreach (var PageResult in ScanResults)
{
    string Value = PageResult.Value;
    //...
}

using IronBarCode;
using System;

// PDF documents can also be scanned, and multiple threads will be used automatically in the background for improved performance
var ScanResults = BarcodeReader.ReadBarcodesFromPdf("Scan.pdf", BarcodeEncoding.All, BarcodeReader.BarcodeRotationCorrection.Low, BarcodeReader.BarcodeImageCorrection.LightlyCleanPixels);

// Work with the results
foreach (var PageResult in ScanResults)
{
    string Value = PageResult.Value;
    //...
}

Imports IronBarCode
Imports System

' PDF documents can also be scanned, and multiple threads will be used automatically in the background for improved performance
Private ScanResults = BarcodeReader.ReadBarcodesFromPdf("Scan.pdf", BarcodeEncoding.All, BarcodeReader.BarcodeRotationCorrection.Low, BarcodeReader.BarcodeImageCorrection.LightlyCleanPixels)

' Work with the results
For Each PageResult In ScanResults
	Dim Value As String = PageResult.Value
	'...
Next PageResult

Imports IronBarCode
Imports System

' PDF documents can also be scanned, and multiple threads will be used automatically in the background for improved performance
Private ScanResults = BarcodeReader.ReadBarcodesFromPdf("Scan.pdf", BarcodeEncoding.All, BarcodeReader.BarcodeRotationCorrection.Low, BarcodeReader.BarcodeImageCorrection.LightlyCleanPixels)

' Work with the results
For Each PageResult In ScanResults
	Dim Value As String = PageResult.Value
	'...
Next PageResult

從掃描的PDF文件中讀取條碼

從位圖圖像中讀取損壞的QR碼

下面的例子顯示了這個C#條碼程式庫甚至可以讀取已損壞的條碼縮略圖。

條碼縮略圖大小的校正是自動完成的。 IronBarcode在C#中使文件可讀。

讀者方法會自動檢測到太小而無法成為合法條碼的條碼圖像，並放大它們。他們清除所有與縮略圖相關的數字噪音，讓它們再次可讀。

using IronBarCode;

// Small or 'Thumbnail' barcode images are automatically detected by IronBarcode and corrected wherever possible even if they have much digital noise.
BarcodeResult SmallResult = BarcodeReader.QuicklyReadOneBarcode("ThumbnailOfBarcode.gif", BarcodeEncoding.Code128);

using IronBarCode;

// Small or 'Thumbnail' barcode images are automatically detected by IronBarcode and corrected wherever possible even if they have much digital noise.
BarcodeResult SmallResult = BarcodeReader.QuicklyReadOneBarcode("ThumbnailOfBarcode.gif", BarcodeEncoding.Code128);

Imports IronBarCode

' Small or 'Thumbnail' barcode images are automatically detected by IronBarcode and corrected wherever possible even if they have much digital noise.
Private SmallResult As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("ThumbnailOfBarcode.gif", BarcodeEncoding.Code128)

Imports IronBarCode

' Small or 'Thumbnail' barcode images are automatically detected by IronBarcode and corrected wherever possible even if they have much digital noise.
Private SmallResult As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("ThumbnailOfBarcode.gif", BarcodeEncoding.Code128)

自動條碼縮略圖大小校正

從不完美的圖像中讀取條碼

在現實情境中，我們可能希望從不完美的圖像中讀取條碼。它們可能是傾斜的圖像或帶有數字噪音的照片。這對大多數開源.NET條碼生成和讀取程式庫來說是無法實現的。另一方面，IronBarcode使得從不完美的圖像中讀取條碼變得輕而易舉。

現在我們將看看ReadASingleBarcode方法。使用其RotationCorrection參數，IronBarcode嘗試從不完美的數字樣本中進行去除傾斜並讀取條碼。

using IronBarCode;
using System;
using System.Drawing;

// All BarcodeResult.Read methods provide the developer with control to correct image and photograph correction and straightening rotation and perspective from skewed images
// * RotationCorrection   e.g BarcodeReader.BarcodeRotationCorrection.Extreme un-rotates and removes perspective from barcode images.
// * ImageCorrection      e.g BarcodeReader.BarcodeImageCorrection.DeepCleanPixels separates barcodes from background imagery and digital noise.
// * BarcodeEncoding      e.g. BarcodeEncoding.Code128,  Setting a specific Barcode format improves speed and reduces the risk of false positive results

// Example with a photo image
var PhotoResult = BarcodeReader.ReadASingleBarcode("Photo.png", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.Medium, BarcodeReader.BarcodeImageCorrection.DeepCleanPixels);
string Value = PhotoResult.Value;
System.Drawing.Bitmap Img = PhotoResult.BarcodeImage;
BarcodeEncoding BarcodeType = PhotoResult.BarcodeType;
byte[] Binary = PhotoResult.BinaryValue;
Console.WriteLine(PhotoResult.Value);

using IronBarCode;
using System;
using System.Drawing;

// All BarcodeResult.Read methods provide the developer with control to correct image and photograph correction and straightening rotation and perspective from skewed images
// * RotationCorrection   e.g BarcodeReader.BarcodeRotationCorrection.Extreme un-rotates and removes perspective from barcode images.
// * ImageCorrection      e.g BarcodeReader.BarcodeImageCorrection.DeepCleanPixels separates barcodes from background imagery and digital noise.
// * BarcodeEncoding      e.g. BarcodeEncoding.Code128,  Setting a specific Barcode format improves speed and reduces the risk of false positive results

// Example with a photo image
var PhotoResult = BarcodeReader.ReadASingleBarcode("Photo.png", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.Medium, BarcodeReader.BarcodeImageCorrection.DeepCleanPixels);
string Value = PhotoResult.Value;
System.Drawing.Bitmap Img = PhotoResult.BarcodeImage;
BarcodeEncoding BarcodeType = PhotoResult.BarcodeType;
byte[] Binary = PhotoResult.BinaryValue;
Console.WriteLine(PhotoResult.Value);

Imports IronBarCode
Imports System
Imports System.Drawing

' All BarcodeResult.Read methods provide the developer with control to correct image and photograph correction and straightening rotation and perspective from skewed images
' * RotationCorrection   e.g BarcodeReader.BarcodeRotationCorrection.Extreme un-rotates and removes perspective from barcode images.
' * ImageCorrection      e.g BarcodeReader.BarcodeImageCorrection.DeepCleanPixels separates barcodes from background imagery and digital noise.
' * BarcodeEncoding      e.g. BarcodeEncoding.Code128,  Setting a specific Barcode format improves speed and reduces the risk of false positive results

' Example with a photo image
Private PhotoResult = BarcodeReader.ReadASingleBarcode("Photo.png", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.Medium, BarcodeReader.BarcodeImageCorrection.DeepCleanPixels)
Private Value As String = PhotoResult.Value
Private Img As System.Drawing.Bitmap = PhotoResult.BarcodeImage
Private BarcodeType As BarcodeEncoding = PhotoResult.BarcodeType
Private Binary() As Byte = PhotoResult.BinaryValue
Console.WriteLine(PhotoResult.Value)

Imports IronBarCode
Imports System
Imports System.Drawing

' All BarcodeResult.Read methods provide the developer with control to correct image and photograph correction and straightening rotation and perspective from skewed images
' * RotationCorrection   e.g BarcodeReader.BarcodeRotationCorrection.Extreme un-rotates and removes perspective from barcode images.
' * ImageCorrection      e.g BarcodeReader.BarcodeImageCorrection.DeepCleanPixels separates barcodes from background imagery and digital noise.
' * BarcodeEncoding      e.g. BarcodeEncoding.Code128,  Setting a specific Barcode format improves speed and reduces the risk of false positive results

' Example with a photo image
Private PhotoResult = BarcodeReader.ReadASingleBarcode("Photo.png", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.Medium, BarcodeReader.BarcodeImageCorrection.DeepCleanPixels)
Private Value As String = PhotoResult.Value
Private Img As System.Drawing.Bitmap = PhotoResult.BarcodeImage
Private BarcodeType As BarcodeEncoding = PhotoResult.BarcodeType
Private Binary() As Byte = PhotoResult.BinaryValue
Console.WriteLine(PhotoResult.Value)

從手機相機讀取條碼

IronBarcode還可以同時讀取多個條碼。我們從IronBarcode得到更好的結果，當我們建立一個文件列表並使用條碼閱讀器讀取多個文件時。條碼掃描過程的ReadBarcodesMultithreaded方法使用多個執行緒，並可能使用您的CPU的所有核心，這比一次讀取一個條碼要快得多。

using IronBarCode;

// The BarcodeResult.ReadBarcodesMultiThreaded method allows for faster barcode scanning of multiple images or PDFs. All threads are automatically managed by IronBarcode.
var ListOfDocuments = new[] { "Image1.png", "image2.JPG", "image3.pdf" };
PagedBarcodeResult[] BatchResults = BarcodeReader.ReadBarcodesMultiThreaded(ListOfDocuments);

// Work with the results
foreach (var Result in BatchResults)
{
    string Value = Result.Value;
    //...
}

using IronBarCode;

// The BarcodeResult.ReadBarcodesMultiThreaded method allows for faster barcode scanning of multiple images or PDFs. All threads are automatically managed by IronBarcode.
var ListOfDocuments = new[] { "Image1.png", "image2.JPG", "image3.pdf" };
PagedBarcodeResult[] BatchResults = BarcodeReader.ReadBarcodesMultiThreaded(ListOfDocuments);

// Work with the results
foreach (var Result in BatchResults)
{
    string Value = Result.Value;
    //...
}

Imports IronBarCode

' The BarcodeResult.ReadBarcodesMultiThreaded method allows for faster barcode scanning of multiple images or PDFs. All threads are automatically managed by IronBarcode.
Private ListOfDocuments = { "Image1.png", "image2.JPG", "image3.pdf" }
Private BatchResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesMultiThreaded(ListOfDocuments)

' Work with the results
For Each Result In BatchResults
	Dim Value As String = Result.Value
	'...
Next Result

Imports IronBarCode

' The BarcodeResult.ReadBarcodesMultiThreaded method allows for faster barcode scanning of multiple images or PDFs. All threads are automatically managed by IronBarcode.
Private ListOfDocuments = { "Image1.png", "image2.JPG", "image3.pdf" }
Private BatchResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesMultiThreaded(ListOfDocuments)

' Work with the results
For Each Result In BatchResults
	Dim Value As String = Result.Value
	'...
Next Result

使用ZXing.NET讀取和解碼QR碼

要讀取QR碼文件，將ViewFile動作方法新增到您的控制器中，如下所示。

public ActionResult ViewFile()
{
    List<KeyValuePair<string, string>> fileData = new List<KeyValuePair<string, string>>();
    KeyValuePair<string, string> data;

    string[] files = Directory.GetFiles(Server.MapPath("~/qrr"));
    foreach (string file in files)
    {
        // Create a barcode reader instance
        IBarcodeReader reader = new BarcodeReader();

        // Load a bitmap
        var barcodeBitmap = (Bitmap)Image.FromFile(Server.MapPath("~/qrr") + "/" + Path.GetFileName(file));

        // Detect and decode the barcode inside the bitmap
        var result = reader.Decode(barcodeBitmap);

        // Do something with the result
        data = new KeyValuePair<string, string>(result.ToString(), "/QR/" + Path.GetFileName(file));
        fileData.Add(data);
    }
    return View(fileData);
}

public ActionResult ViewFile()
{
    List<KeyValuePair<string, string>> fileData = new List<KeyValuePair<string, string>>();
    KeyValuePair<string, string> data;

    string[] files = Directory.GetFiles(Server.MapPath("~/qrr"));
    foreach (string file in files)
    {
        // Create a barcode reader instance
        IBarcodeReader reader = new BarcodeReader();

        // Load a bitmap
        var barcodeBitmap = (Bitmap)Image.FromFile(Server.MapPath("~/qrr") + "/" + Path.GetFileName(file));

        // Detect and decode the barcode inside the bitmap
        var result = reader.Decode(barcodeBitmap);

        // Do something with the result
        data = new KeyValuePair<string, string>(result.ToString(), "/QR/" + Path.GetFileName(file));
        fileData.Add(data);
    }
    return View(fileData);
}

Public Function ViewFile() As ActionResult
	Dim fileData As New List(Of KeyValuePair(Of String, String))()
	Dim data As KeyValuePair(Of String, String)

	Dim files() As String = Directory.GetFiles(Server.MapPath("~/qrr"))
	For Each file As String In files
		' Create a barcode reader instance
		Dim reader As IBarcodeReader = New BarcodeReader()

		' Load a bitmap
		Dim barcodeBitmap = CType(Image.FromFile(Server.MapPath("~/qrr") & "/" & Path.GetFileName(file)), Bitmap)

		' Detect and decode the barcode inside the bitmap
		Dim result = reader.Decode(barcodeBitmap)

		' Do something with the result
		data = New KeyValuePair(Of String, String)(result.ToString(), "/QR/" & Path.GetFileName(file))
		fileData.Add(data)
	Next file
	Return View(fileData)
End Function

Public Function ViewFile() As ActionResult
	Dim fileData As New List(Of KeyValuePair(Of String, String))()
	Dim data As KeyValuePair(Of String, String)

	Dim files() As String = Directory.GetFiles(Server.MapPath("~/qrr"))
	For Each file As String In files
		' Create a barcode reader instance
		Dim reader As IBarcodeReader = New BarcodeReader()

		' Load a bitmap
		Dim barcodeBitmap = CType(Image.FromFile(Server.MapPath("~/qrr") & "/" & Path.GetFileName(file)), Bitmap)

		' Detect and decode the barcode inside the bitmap
		Dim result = reader.Decode(barcodeBitmap)

		' Do something with the result
		data = New KeyValuePair(Of String, String)(result.ToString(), "/QR/" & Path.GetFileName(file))
		fileData.Add(data)
	Next file
	Return View(fileData)
End Function

讀取和解碼QR碼

解碼後的QR碼

解碼位圖中的條碼

using ZXing;
using System.Drawing;

// Create a barcode reader instance
BarcodeReader reader = new BarcodeReader();

// Load a bitmap
var barcodeBitmap = (Bitmap)Image.FromFile("C:\\sample-barcode-image.png");

// Detect and decode the barcode inside the bitmap
var result = reader.Decode(barcodeBitmap);

// Do something with the result
if (result != null)
{
    txtDecoderType.Text = result.BarcodeFormat.ToString();
    txtDecoderContent.Text = result.Text;
}

using ZXing;
using System.Drawing;

// Create a barcode reader instance
BarcodeReader reader = new BarcodeReader();

// Load a bitmap
var barcodeBitmap = (Bitmap)Image.FromFile("C:\\sample-barcode-image.png");

// Detect and decode the barcode inside the bitmap
var result = reader.Decode(barcodeBitmap);

// Do something with the result
if (result != null)
{
    txtDecoderType.Text = result.BarcodeFormat.ToString();
    txtDecoderContent.Text = result.Text;
}

Imports ZXing
Imports System.Drawing

' Create a barcode reader instance
Private reader As New BarcodeReader()

' Load a bitmap
Private barcodeBitmap = CType(Image.FromFile("C:\sample-barcode-image.png"), Bitmap)

' Detect and decode the barcode inside the bitmap
Private result = reader.Decode(barcodeBitmap)

' Do something with the result
If result IsNot Nothing Then
	txtDecoderType.Text = result.BarcodeFormat.ToString()
	txtDecoderContent.Text = result.Text
End If

Imports ZXing
Imports System.Drawing

' Create a barcode reader instance
Private reader As New BarcodeReader()

' Load a bitmap
Private barcodeBitmap = CType(Image.FromFile("C:\sample-barcode-image.png"), Bitmap)

' Detect and decode the barcode inside the bitmap
Private result = reader.Decode(barcodeBitmap)

' Do something with the result
If result IsNot Nothing Then
	txtDecoderType.Text = result.BarcodeFormat.ToString()
	txtDecoderContent.Text = result.Text
End If

ZXing解碼器線上

ZXing解碼器線上是一個可在線上使用的條碼和QR碼掃描器，支持解碼。上傳PNG或其他格式的QR碼圖像，然後它將開始解碼。同樣，您也可以為任何資料生成一個QR碼。大多數時候，該資訊將是您希望在QR碼中編碼的URL或文字。

導航至ZXing解碼器網站。

A Comparison between IronBarcode and ZXing.NET, Figure 17: 解碼後的QR碼

ZXing解碼器網站

A Comparison between IronBarcode and ZXing.NET, Figure 18: 解碼後的QR碼

ZXing解碼結果

定價和授權

ZXing.NET程式庫是一個免費的開源程式庫，允許您構建條碼讀取應用程式，根據Apache License 2.0許可，允許免費商業使用並有適當的歸屬。

IronBarcode的開發者許可是免費提供的。 IronBarcode有一個獨特的定價機制：Lite包的價格從$999開始，無需額外費用。 SaaS和OEM項目也可以再次發布。每個許可包括永久許可，開發/預發/生產的有效性，30天退款保證，以及一年期的軟體支持和更新（一次性購買）。存取此頁面以查看IronBarcode的完整定價和許可資訊。

為什麼選擇IronBarcode？

IronBarcode包含一個易於使用的API供開發者在.NET中讀寫條碼，這在現實用例中優化了精度和低錯誤率。

例如，BarcodeWriter類將驗證和糾正UPCA和UPCE條碼的'校驗和'。它還會'零填充'過短而不能輸入特定數字格式的數字。如果您的資料與指定資料格式不相容，IronBarcode將通知開發者他們可以使用的更合適的條碼格式。

IronBarcode在讀取條碼時表現優異，當條碼是用於拍攝圖像的時候，也就是說，當圖像在圖形上並不完美且不是機器生成的截圖的時候也是如此。

IronBarcode與ZXing.NET有何不同？

IronBarcode構建自ZXing.NET（斑馬過街）核心，擁有改進的處理能力。與ZXing.NET核心程式庫相比，它配備了易於使用的API和低錯誤率。不僅如此，IronBarcode還支持比常規ZXing.NET程式庫更廣泛的條碼格式。

IronBarcode是ZXing.NET的改進版本，為使用者提供了商業用途的平台，並有可能在多個平台上使用同一個包。它還具有全方位的技術支持，隨時隨地準備為您提供幫助。

IronBarcode包括自動旋轉、視角校正和數字噪音校正，並能夠檢測圖像中編碼的條碼型別。

結論

總之，IronBarcode是一個多功能的.NET軟體程式庫和C# QR碼生成器，用於讀取多種條碼格式，無論是截圖、照片、掃描還是其他不完美的現實圖像。

IronBarcode是建立和識別條碼最有效的程式庫之一。在建立和識別條碼方面，它也是最快的程式庫之一。該程式庫與不同的作業系統相容。它易於設計，並支持多種條碼格式。此外，還支持各種符號、格式和字元。

ZXing.NET條碼是一個強大的程式庫，可以在各種圖像格式中生成和識別條碼。我們可以在多種格式中讀取和建立圖像。 ZXing.NET還允許您更改條碼的外觀，調整其高度、寬度、條碼文字等。

與ZXing.NET相比，IronBarcode套件提供可靠的許可和支持。 IronBarcode的價格是$999。儘管ZXing是免費且開源的，IronBarcode提供全面的商業支持和專業維護。除了比ZXing.NET更靈活之外，IronBarcode解決方案還具有更多功能。因此，顯然IronBarcode比ZXing.NET具有更強的優勢。

在比較識別和生成條碼的處理時間時，IronBarcode比ZXing.NET更出色。 IronBarcode還具有多種屬性，允許我們從不同的圖像格式和PDF文件中讀取條碼。它還允許我們在條碼或QR碼內包含圖像，這在任何其他程式庫中是不可能做到的。

IronBarcode在開發早期階段是免費的。您可以獲得免費試用供生產等級或商業用途。根據開發者的要求，IronBarcode提供三個定價層級。您可以選擇最佳滿足您需求的解決方案。您現在可以以兩個Iron Software產品的價格獲得五個Iron Software產品套件。存取此網站以獲取更多資訊。

請注意: ZXing.NET是其各自所有者的註冊商標。本網站與ZXing.NET無關，未經其認可或贊助。所有產品名稱、標誌和品牌均為其各自所有者的財產。比較僅供資訊參考，並反映了撰寫時公開可用的資訊。