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 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 myNewBarcode.ResizeTo(400, 100); // Save our newly-created barcode as an image myBarcode.SaveAsImage("EAN8.jpeg"); Image myBarcodeImage = myBarcode.Image; // Can be used as Image Bitmap myBarcodeBitmap = myBarcode.ToBitmap(); // Can be used as Bitmap

using IronBarCode; using System.Drawing; /*** CREATING BARCODE IMAGES ***/ // 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 styled 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 the barcode 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 the barcode as a .NET native object 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 an HTML file or tag 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 (200, 50) 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); // Resize in pixels MyBarCode.SetMargins(0, 20, 0, 20); // Set margins in pixels 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 ***/ // Create a barcode in one line of code 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 different formats

IronBarcode

Version 2024.12 released

See what’s new

Cross Platform Support

Designed for C#, F#, & VB.NET running on .NET 9, 8, 7, 6, Core, Standard, or Framework
For Mobile QR support, try our IronQR Library

A C# Barcode Library that prioritizes accuracy, ease of use, and speed.

IronBarcode is the leading C# Barcode library for reading and creating barcodes in .NET. Its user friendly API allows developers to add Barcode functionality to .NET projects in minutes.