using IronBarCode; using System.Drawing; // Creating a barcode is as simple as: var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8); // And save our barcode as in image: myBarcode.SaveAsImage("EAN8.jpeg"); Image myBarcodeImage = myBarcode.Image; // Can be used as Image Bitmap myBarcodeBitmap = myBarcode.ToBitmap(); // Can be used as Bitmap // 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 var resultFromPdf = BarcodeReader.ReadPdf(@"file/mydocument.pdf"); // From PDF use ReadPdf // After creating a barcode, we may choose to resize and save which is easily done with: var myNewBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8); myNewBarcode.ResizeTo(400, 100); myNewBarcode.SaveAsImage("myBarcodeResized.jpeg"); // To set more options and optimization with your Barcode Reading, // Please utilize the BarcodeReaderOptions paramter of read: var myOptionsExample = new BarcodeReaderOptions { // Choose a 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 barcode is found, unless set to true ExpectMultipleBarcodes = true, // By default, all barcode formats are scanned for. // Specifying one or more, performance will increase. ExpectBarcodeTypes = BarcodeEncoding.AllOneDimensional, // Utilizes multiple threads to reads barcodes from multiple images in parallel. Multithreaded = true, // Maximum threads for parallel. Default is 4 MaxParallelThreads = 2, // The area of each image frame in which to scan for barcodes. // Will improve performance significantly and avoid unwanted results and avoid noisy parts of the image. CropArea = new Rectangle(), // Special Setting for Code39 Barcodes. // If a Code39 barcode is detected. Try to use extended mode for the full ASCII Character Set UseCode39ExtendedMode = true }; // And, apply: var results = BarcodeReader.Read("barcode.png", myOptionsExample);

using IronBarCode; using System.Drawing; /*** CREATING BARCODE IMAGES ***/ // Shorthand:: Create and save a barcode in a single line of code BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8).ResizeTo(400, 100).SaveAsImage("EAN8.jpeg"); /***** IN-DEPTH BARCODE CREATION OPTIONS *****/ // BarcodeWriter.CreateBarcode creates a GeneratedBarcode which can be styles and exported as an Image object or File GeneratedBarcode MyBarCode = BarcodeWriter.CreateBarcode("Any Number, String or Binary Value", BarcodeWriterEncoding.Code128); // Style the Barcode in a fluent LINQ style fashion MyBarCode.ResizeTo(300, 150).SetMargins(20).AddAnnotationTextAboveBarcode("Example EAN8 Barcode").AddBarcodeValueTextBelowBarcode(); MyBarCode.ChangeBackgroundColor(Color.LightGoldenrodYellow); // Save MyBarCode as an image file 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"); // Save MyBarCode as a .NET native objects Image MyBarCodeImage = MyBarCode.Image; Bitmap MyBarCodeBitmap = MyBarCode.ToBitmap(); byte[] PngBytes = MyBarCode.ToPngBinaryData(); using (System.IO.Stream PdfStream = MyBarCode.ToPdfStream()) { // Stream barcode image output also works for GIF,JPEG, PDF, PNG, BMP and TIFF } // Save MyBarCode as HTML files and tags MyBarCode.SaveAsHtmlFile("MyBarCode.Html"); string ImgTagForHTML = MyBarCode.ToHtmlTag(); string DataURL = MyBarCode.ToDataUrl(); // Save MyBarCode to a new PDF, or stamp it in any position on any page(s) of an existing Document MyBarCode.SaveAsPdf("MyBarCode.Pdf"); MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 200, 50, 1); // position 200x50 on page 1 MyBarCode.StampToExistingPdfPages("ExistingPDF.pdf", 200, 50, new[] { 1, 2, 3 }, "Password123"); // multiple pages of an encrypted PDF

using IronBarCode; using System; using System.Drawing; /*** STYLING GENERATED BARCODES ***/ // BarcodeWriter.CreateBarcode creates a GeneratedBarcode object which allows the barcode to be styled and annotated. GeneratedBarcode MyBarCode = BarcodeWriter.CreateBarcode("Iron Software", BarcodeWriterEncoding.QRCode); // Any text (or commonly, the value of the barcode) can be added to the image in a default or specified font. // Text positions are automatically centered, above or below. Fonts that are too large for a given image are automatically scaled down. MyBarCode.AddBarcodeValueTextBelowBarcode(); MyBarCode.AddAnnotationTextAboveBarcode("This is My Barcode", new Font(new FontFamily("Arial"), 12, FontStyle.Regular, GraphicsUnit.Pixel), Color.DarkSlateBlue); // Resize, add Margins and Check final Image Dimensions MyBarCode.ResizeTo(300, 300); // pixels MyBarCode.SetMargins(0, 20, 0, 20); int FinalWidth = MyBarCode.Width; int FinalHeight = MyBarCode.Height; //Recolor the barcode and its background MyBarCode.ChangeBackgroundColor(Color.LightGray); MyBarCode.ChangeBarCodeColor(Color.DarkSlateBlue); if (!MyBarCode.Verify()) { Console.WriteLine("Color contrast should be at least 50% or a barcode may become unreadable. Test using GeneratedBarcode.Verify()"); } // Finally save the result MyBarCode.SaveAsHtmlFile("StyledBarcode.html"); /*** STYLING BARCODES IN A SINGLE LINQ STYLE EXPRESSION ***/ // Fluent API BarcodeWriter.CreateBarcode("https://ironsoftware.com", BarcodeWriterEncoding.Aztec).ResizeTo(250, 250).SetMargins(10).AddBarcodeValueTextAboveBarcode().SaveAsImage("StyledBarcode.png"); /*** STYLING QR CODES WITH LOGO IMAGES OR BRANDING ***/ // Use the QRCodeWriter.CreateQrCodeWithLogo Method instead of BarcodeWriter.CreateBarcode // Logo will automatically be sized appropriately and snapped to the QR grid. var qrCodeLogo = new QRCodeLogo("ironsoftware_logo.png"); GeneratedBarcode myQRCodeWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/", qrCodeLogo); myQRCodeWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); myQRCodeWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); myQRCodeWithLogo.SaveAsPng("QRWithLogo.Png").SaveAsPdf("MyVerifiedQR.html"); // save as 2 formats

Published May 9, 2023

How to Make A QR Code For A Link (C# Tutorial)

1.0 Introduction

The Quick Response Code, or QR code, has its roots in the Japanese car sector. It is also known as the QR Symbol, QR Graphic, or QR Code Graphic. Masahiro Hara created it in 1994, and its initial application was as a quick and easy tool to monitor the progress of vehicles as they were being assembled in factories. Since then, the use of QR codes as a barcode substitute has grown significantly outside the car manufacturing industry. Its greater reading speed and storage capacity are to blame for this. QR codes can be used to exchange and store information for marketing purposes and for social media sites and accounts in addition to tracking and identifying products. The static QR code which is generated from the application can be scanned with the camera application.

2.0 IronBarcode Features

With IronBarcode's QR Code Library, creating dynamic QR codes is simple. With just a few lines of code, this straightforward library can quickly create a QR code. IronBarcode can generate QR codes with high quality, and it makes it easy for the QR Code scanner to read custom codes.

The majority of barcode formats and QR standards, including UPC A/E, EAN 8/13, Code 39/93/128, ITF, MSI, RSS 14/Expanded, Databar, and CodaB, may be read and written by IronBarcode.
IronBarcode can read scans and live video frames, correcting rotation, noise, distortion, and skewing. IronBarcode automatically preprocesses barcode images to increase reading efficiency and accuracy while creating QR codes. They allow for content editing, dynamic QR code are particularly popular.
IronBarcode can run on a number of cores and threads (particularly helpful for batch processing servers).
IronBarcode can automatically locate one or more barcodes in single- and multipage documents.
IronBarcode works with both the .NET Framework and .NET Core implementations, and it supports 32- and 64-bit architectures.
On PC and mobile platforms, IronBarcode supports console, desktop, cloud, and web apps.
PDF, JPG, TIFF, GIF, BMP, PNG, and HTML are just a few of the file and stream formats that IronBarcode can produce QR code pictures for.

3.0 Creating QR Code Image

3.1 Using IronBarcode from Windows/Console Application

The proceeding sections of this article present an example to demonstrate how easily our library generates QR codes.

Step 1. Creating a New Project for Creating QR Codes

Open Visual Studio and click the File menu option for New Project.

Click Next after selecting the Console App template in the ensuing box.

How to Make A QR Code For A Link (C# Tutorial): Figure 1

Enter any project name you choose (for instance, QR Code Generator) in the Project name text area, and then enter the location of the new project in the Location field. Click the Next button to proceed after that.

How to Make A QR Code For A Link (C# Tutorial): Figure 2

Select a Dot NET Framework (here, we're using Dot NET 6.0 (Long term support)) from the Framework drop-down option, then click Create.

How to Make A QR Code For A Link (C# Tutorial): Figure 3

Step 2. Install the IronBarcode library

Download the necessary IronBarcode library by entering the code below into the package manager :

Install-Package BarCode

How to Make A QR Code For A Link (C# Tutorial): Figure 4

Alternatively, we can conduct a search using the NuGet package management and download the "IronBarcode" package, which will list all results and allow us to choose the one we need to download.

How to Make A QR Code For A Link (C# Tutorial): Figure 5

Step 3. Generate a QR Code Image

IronBarcode allows us to create QR code with few lines of code. Use the QRCodeWriter.CreateQrCode method to create a new QR code as shown in the following code:

using IronBarCode;
QRCodeWriter.CreateQrCode("www.google.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium,0).SaveAsPng("NewQR.png");

using IronBarCode;
QRCodeWriter.CreateQrCode("www.google.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium,0).SaveAsPng("NewQR.png");

Imports IronBarCode
QRCodeWriter.CreateQrCode("www.google.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium,0).SaveAsPng("NewQR.png")

VB C#

The data to be encoded in the code image (which might be a URL or a Stream) is the only mandatory parameter for the CreateQrCode method. Additionally, the method takes three optional parameters:

The graphic's default dimensions are 500 pixels wide by 500 pixels high.
An error correction level. Low, Medium, High, and Highest are the four levels of error correction offered by IronBarcode. CreateQrCode method by default uses the highest level of correction (QRCodeWriter.QrErrorCorrectionLevel.Highest).
The version number of the QR code. For a list of acceptable variations, visit this page. The method is told to use the right version number based on the data it will encode if the value is 0 (the default value).

The sample above uses the medium level of error correction to produce a 500 by 500 pixel graphic that creates a custom QR code. Next, we can save the generated QR codes as a PNG file at a specified file location by calling the SaveAsPng method.

How to Make A QR Code For A Link (C# Tutorial): Figure 6

We'll then look at an example of a use-case where a user or business wants to add a company logo to a generated QR code. To accomplish this, the QrCodeWriter.CreateQrCodeWithLogo method is used in the example code below.

var QRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("www.gogle.com","qrWithlogo.png",500);
QRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkRed);
QRWithLogo.SaveAsPng("NewQR_Code.png");

var QRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("www.gogle.com","qrWithlogo.png",500);
QRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkRed);
QRWithLogo.SaveAsPng("NewQR_Code.png");

Dim QRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("www.gogle.com","qrWithlogo.png",500)
QRWithLogo.ChangeBarCodeColor(System.Drawing.Color.DarkRed)
QRWithLogo.SaveAsPng("NewQR_Code.png")

VB C#

In the above example, we encoded the String value of the URL "www.google.com" into a new QR code that embeds an image from that website into a given file location.

Graphics are included in the QR code above. The logo is automatically positioned to that size and sized to match the QR code square grid so that the pure code can still be read. We can also customize the color of the QR address bar code using the ChangeBarCodeColor method, which offers a range of code colors we can use on the QR code. One uses Color-class-types, while the other makes use of HTML hex color notation as follows:

QRWithLogo.ChangeBarCodeColor(System.Drawing.ColorTranslator.FromHtml("#8B0000"));

QRWithLogo.ChangeBarCodeColor(System.Drawing.ColorTranslator.FromHtml("#8B0000"));

QRWithLogo.ChangeBarCodeColor(System.Drawing.ColorTranslator.FromHtml("#8B0000"))

VB C#

The above line of code specifies the dark red color of the barcode. Then, as the code instructs, we save it as a PNG file. We can also save QR codes in other file formats such as HTML:

QRWithLogo.SaveAsHtmlFile("test.html");

QRWithLogo.SaveAsHtmlFile("test.html");

QRWithLogo.SaveAsHtmlFile("test.html")

VB C#

The outcome of the source code above is displayed in the image below.

How to Make A QR Code For A Link (C# Tutorial): Figure 7

QR codes can be saved in other file formats such as HTML:

QRWithLogo.SaveAsHtmlFile("test.html");

QRWithLogo.SaveAsHtmlFile("test.html");

QRWithLogo.SaveAsHtmlFile("test.html")

VB C#

How to Make A QR Code For A Link (C# Tutorial): Figure 8

Using IronBarcode QR Code generator website

IronBarcode can be used in web applications as well. The MVC Dot Net core 6.0 sample code is provided below.

public IActionResult Index()
{
    var barcode = QRCodeWriter.CreateQrCode("www.google.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium, 0);
        barcode.SaveAsPng("Barcode.png");
        var filePath = Path.Combine(Directory.GetCurrentDirectory(), "Barcode.png");
        return PhysicalFile(filePath, "image/png", "Barcode.png");
}

public IActionResult Index()
{
    var barcode = QRCodeWriter.CreateQrCode("www.google.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium, 0);
        barcode.SaveAsPng("Barcode.png");
        var filePath = Path.Combine(Directory.GetCurrentDirectory(), "Barcode.png");
        return PhysicalFile(filePath, "image/png", "Barcode.png");
}

Public Function Index() As IActionResult
	Dim barcode = QRCodeWriter.CreateQrCode("www.google.com", 500, QRCodeWriter.QrErrorCorrectionLevel.Medium, 0)
		barcode.SaveAsPng("Barcode.png")
		Dim filePath = Path.Combine(Directory.GetCurrentDirectory(), "Barcode.png")
		Return PhysicalFile(filePath, "image/png", "Barcode.png")
End Function

VB C#

The code that we used for the Windows/console program is the same as the one that is provided above. The above code first generates a QR code file before returning it. Then QR code can be downloaded by the user as PNG file. We can also make it available for use on mobile devices and online forms.

How to Make A QR Code For A Link (C# Tutorial): Figure 9

How to Make A QR Code For A Link (C# Tutorial): Figure 10

For more code tutorials for IronBarcode click here.

4.0 Conclusion

One of the most effective libraries for creating and identifying barcodes is IronBarcode. Additionally, it is among the quickest libraries for creating and reading barcodes. Different operating systems are compatible with the library.

It is simple to develop and supports a wide range of barcode formats. We can alter the color, line width, height, barcode text, and more.

You may find the licensing information here. Both a free QR code generator library for developer license and a premium edition of IronBarcode are available. It includes free support and updates for a year.

Users can also benefit from Iron Suite, a Suite of 5 professional ASP.NET core libraries including IronBarcode, IronXL, IronPDF and more.