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: BarcodeReaderOptions 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 perfornace significantly and avoid unwanted results and avoid noisy parts of the image. CropArea = new System.Drawing.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);

Imports IronBarCode Imports System.Drawing ' Creating a barcode is as simple as: Private myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8) ' And save our barcode as in image: myBarcode.SaveAsImage("EAN8.jpeg") Dim myBarcodeImage As Image = myBarcode.Image ' Can be used as Image Dim myBarcodeBitmap As Bitmap = myBarcode.ToBitmap() ' Can be used as Bitmap ' Reading a barcode is easy with IronBarcode: Dim resultFromFile = BarcodeReader.Read("file/barcode.png") ' From a file Dim resultFromBitMap = BarcodeReader.Read(New Bitmap("barcode.bmp")) ' From a bitmap Dim resultFromImage = BarcodeReader.Read(Image.FromFile("barcode.jpg")) ' From an image Dim 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: Dim 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: Dim myOptionsExample As New BarcodeReaderOptions() With { .Speed = ReadingSpeed.Balanced, .ExpectMultipleBarcodes = True, .ExpectBarcodeTypes = BarcodeEncoding.AllOneDimensional, .Multithreaded = True, .MaxParallelThreads = 2, .CropArea = New System.Drawing.Rectangle(), .UseCode39ExtendedMode = True } ' And, apply: Dim results = BarcodeReader.Read("barcode.png", myOptionsExample)

using IronBarCode; using System; using System.Drawing; // Include a reference to System.Drawing.Dll /*** GET STARED WITH BARCODE READING ***/ // Read almost any Barcode or QR in 1 line of Code. BarcodeResult QRResult = BarcodeReader.QuicklyReadOneBarcode("QR.png"); // Work with the results if (QRResult != null) { string Value = QRResult.Value; Bitmap Img = QRResult.BarcodeImage; BarcodeEncoding BarcodeType = QRResult.BarcodeType; byte[] Binary = QRResult.BinaryValue; Console.WriteLine(QRResult.Value); } // Setting the optional BarcodeEncoding and TryHarder settings will improve performance BarcodeResult QRBetterResult = BarcodeReader.QuicklyReadOneBarcode("QR.png", BarcodeEncoding.QRCode, true); // Multiple Barcode Formats May be Specified using the | Pipe Operator BarcodeResult FormatsResult = BarcodeReader.QuicklyReadOneBarcode("QR.png", BarcodeEncoding.QRCode | BarcodeEncoding.PDF417 | BarcodeEncoding.Code128); /*** READING MULTIPLE BARCODES FROM 1 IMAGE OR PDF DOCUMENT ***/ // Multiple barcodes may be scanned up from a single document or image. A PDF document may also used as the input image BarcodeResult[] PDFResults = BarcodeReader.QuicklyReadAllBarcodes("MultipleBarcodes.pdf", BarcodeEncoding.AllOneDimensional, true); // Work with the results foreach (var PDFResult in PDFResults) { string Value = PDFResult.Value; Bitmap Img = PDFResult.BarcodeImage; BarcodeEncoding BarcodeType = PDFResult.BarcodeType; byte[] Binary = PDFResult.BinaryValue; Console.WriteLine(PDFResult.Value); } // Multi frame TIFF and GIF images can also be scanned, and multiple threads will be used automatically in the background for improved performance BarcodeResult[] MultiFrameResults = BarcodeReader.ReadBarcodesFromMultiFrameTiff("Multiframe.tiff", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.Low, BarcodeReader.BarcodeImageCorrection.None); // 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); /*** READING BARCODES FROM ONLY PART OF AN IMAGE OR DOCUMENT ***/ // All BarcodeResult.Read methods all have counterparts that support only scanning for barcodes in specific parts of documents. // This really helps performance when processing batches of similar documents, forms, tickets, financial documents etc. System.Drawing.Rectangle MyCropArea = new Rectangle { X = 165, Y = 225, Width = 500, Height = 200 }; // measured in pixels BarcodeResult[] InvoiceResults = BarcodeReader.ReadAllBarcodesInCropArea("Invoice.Tiff", MyCropArea, BarcodeEncoding.Code128); // To read barcodes from only 1 or selected pages of a PDF, the ReadBarcodesFromPdfPage and ReadBarcodesFromPdfPages methods can be used. // Page numbers are 1 based (the first page is 1 not zero) PagedBarcodeResult[] Page3ScanResults = BarcodeReader.ReadBarcodesFromPdfPage("PileofInvoices.pdf", 3, BarcodeEncoding.PDF417);

Imports IronBarCode Imports System Imports System.Drawing ' Include a reference to System.Drawing.Dll '''* GET STARED WITH BARCODE READING ** ' Read almost any Barcode or QR in 1 line of Code. Private QRResult As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("QR.png") ' Work with the results If QRResult IsNot Nothing Then Dim Value As String = QRResult.Value Dim Img As Bitmap = QRResult.BarcodeImage Dim BarcodeType As BarcodeEncoding = QRResult.BarcodeType Dim Binary() As Byte = QRResult.BinaryValue Console.WriteLine(QRResult.Value) End If ' Setting the optional BarcodeEncoding and TryHarder settings will improve performance Dim QRBetterResult As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("QR.png", BarcodeEncoding.QRCode, True) ' Multiple Barcode Formats May be Specified using the | Pipe Operator Dim FormatsResult As BarcodeResult = BarcodeReader.QuicklyReadOneBarcode("QR.png", BarcodeEncoding.QRCode Or BarcodeEncoding.PDF417 Or BarcodeEncoding.Code128) '''* READING MULTIPLE BARCODES FROM 1 IMAGE OR PDF DOCUMENT ** ' Multiple barcodes may be scanned up from a single document or image. A PDF document may also used as the input image Dim PDFResults() As BarcodeResult = BarcodeReader.QuicklyReadAllBarcodes("MultipleBarcodes.pdf", BarcodeEncoding.AllOneDimensional, True) ' Work with the results For Each PDFResult In PDFResults Dim Value As String = PDFResult.Value Dim Img As Bitmap = PDFResult.BarcodeImage Dim BarcodeType As BarcodeEncoding = PDFResult.BarcodeType Dim Binary() As Byte = PDFResult.BinaryValue Console.WriteLine(PDFResult.Value) Next PDFResult ' Multi frame TIFF and GIF images can also be scanned, and multiple threads will be used automatically in the background for improved performance Dim MultiFrameResults() As BarcodeResult = BarcodeReader.ReadBarcodesFromMultiFrameTiff("Multiframe.tiff", BarcodeEncoding.Code128, BarcodeReader.BarcodeRotationCorrection.Low, BarcodeReader.BarcodeImageCorrection.None) ' The BarcodeResult.ReadBarcodesMultiThreaded method allows for faster barcode scanning of multiple images or PDFs. All threads are automatically managed by IronBarCode. Dim ListOfDocuments = { "Image1.png", "image2.JPG", "image3.pdf" } Dim BatchResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesMultiThreaded(ListOfDocuments) '''* READING BARCODES FROM ONLY PART OF AN IMAGE OR DOCUMENT ** ' All BarcodeResult.Read methods all have counterparts that support only scanning for barcodes in specific parts of documents. ' This really helps performance when processing batches of similar documents, forms, tickets, financial documents etc. Dim MyCropArea As System.Drawing.Rectangle = New Rectangle With { .X = 165, .Y = 225, .Width = 500, .Height = 200 } Dim InvoiceResults() As BarcodeResult = BarcodeReader.ReadAllBarcodesInCropArea("Invoice.Tiff", MyCropArea, BarcodeEncoding.Code128) ' To read barcodes from only 1 or selected pages of a PDF, the ReadBarcodesFromPdfPage and ReadBarcodesFromPdfPages methods can be used. ' Page numbers are 1 based (the first page is 1 not zero) Dim Page3ScanResults() As PagedBarcodeResult = BarcodeReader.ReadBarcodesFromPdfPage("PileofInvoices.pdf", 3, BarcodeEncoding.PDF417)

using IronBarCode; using System.Drawing; // Include a reference to System.Drawing.Dll /*** 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

Imports IronBarCode Imports System.Drawing ' Include a reference to System.Drawing.Dll '''* 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 Dim MyBarCode As GeneratedBarcode = 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 Dim MyBarCodeImage As Image = MyBarCode.Image Dim MyBarCodeBitmap As Bitmap = MyBarCode.ToBitmap() Dim PngBytes() As Byte = MyBarCode.ToPngBinaryData() Using PdfStream As System.IO.Stream = MyBarCode.ToPdfStream() ' Stream barcode image output also works for GIF,JPEG, PDF, PNG, BMP and TIFF End Using ' Save MyBarCode as HTML files and tags MyBarCode.SaveAsHtmlFile("MyBarCode.Html") Dim ImgTagForHTML As String = MyBarCode.ToHtmlTag() Dim DataURL As String = 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, { 1, 2, 3 }, "Password123") ' multiple pages of an encrypted PDF

using System; using IronBarCode; using System.Drawing; // Include a reference to System.Drawing.Dll /*** STYING 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"); /*** STYING 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"); /*** STYING 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. GeneratedBarcode QRWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://visualstudio.microsoft.com/", "visual-studio-logo.png"); QRWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); QRWithLogo.SaveAsPng("QRWithLogo.Png").SaveAsPdf("MyVerifiedQR.html"); // save as 2 formats

Imports System Imports IronBarCode Imports System.Drawing ' Include a reference to System.Drawing.Dll '''* STYING GENERATED BARCODES ** ' BarcodeWriter.CreateBarcode creates a GeneratedBarcode object which allows the barcode to be styled and annotated. Private MyBarCode As GeneratedBarcode = 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) Dim FinalWidth As Integer = MyBarCode.Width Dim FinalHeight As Integer = MyBarCode.Height 'Recolor the barcode and its background MyBarCode.ChangeBackgroundColor(Color.LightGray) MyBarCode.ChangeBarCodeColor(Color.DarkSlateBlue) If Not MyBarCode.Verify() Then Console.WriteLine("Color contrast should be at least 50% or a barcode may become unreadable. Test using GeneratedBarcode.Verify()") End If ' Finally save the result MyBarCode.SaveAsHtmlFile("StyledBarcode.html") '''* STYING 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") '''* STYING 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. Dim QRWithLogo As GeneratedBarcode = QRCodeWriter.CreateQrCodeWithLogo("https://visualstudio.microsoft.com/", "visual-studio-logo.png") QRWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen) QRWithLogo.SaveAsPng("QRWithLogo.Png").SaveAsPdf("MyVerifiedQR.html") ' save as 2 formats

IronBarcode Blog

September 15, 2022

.NET QR Code Generator (Code Example Tutorial)

The C# IronBarcode Library provides functions that allow us to generate QR codes with just one line of code.