C# QR-Code Generator Control for .NET

     BarcodeLib.Barcode.QRCode qrbarcode = new BarcodeLib.Barcode.QRCode();

     // Select QR Code data encoding type: numeric, alphanumeric, byte, and Kanji to select from.
     qrbarcode.Encoding = BarcodeLib.Barcode.QRCodeEncoding.Auto;
     qrbarcode.Data = "123456789012";

     // Adjusting QR Code barcode module size and quiet zones on four sides.
     qrbarcode.ModuleSize = 3;
     qrbarcode.LeftMargin = 12;
     qrbarcode.RightMargin = 12;
     qrbarcode.TopMargin = 12;
     qrbarcode.BottomMargin = 12;

     // Select QR Code Version (Symbol Size), available from V1 to V40, i.e. 21 x 21 to 177 x 177 modules.
     qrbarcode.Version = BarcodeLib.Barcode.QRCodeVersion.V1;

     // Set QR-Code bar code Reed Solomon Error Correction Level: L(7%), M (15%), Q(25%), H(30%)
     qrbarcode.ECL = BarcodeLib.Barcode.QRCodeErrorCorrectionLevel.L;
     qrbarcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Png;
   
     // More barcode settings here, like ECI, FNC1, Structure Append, etc.

     // save barcode image into your system
     qrbarcode.drawBarcode("c:/qrcode.png");
    
     // Generate QR Code barcode & output to byte array
     byte[] barcodeInBytes = qrbarcode.drawBarcodeAsBytes();
    
     // Generate QR Code barcode to Graphics object
     Graphics graphics = ...;
     qrbarcode.drawBarcode(graphics);
    
     // Generate QR Code barcode and output to HttpResponse object
     HttpResponse response = ...;
     qrbarcode.drawBarcode(response);
    
     // Generate QR Code barcode and output to Stream object
     Stream stream = ...;
     qrbarcode.drawBarcode(stream);