C# QR Code Generator Property List

1. Set the Data property with the value to encode. Type is string.
   Web Stream URL Parameter: Data.
2. Set the ProcessTilde property to true, if you want use the tilde character "~" to specify special characters in the input data. Default is false.
   ~NNN: is used to represent the ASCII character with the value of NNN.
   Web Stream URL Parameter: ProcessTilde. Valid values are: "true", or "false".
3. Set the IsUnicodeData property to true, if you need encode Unicode text in QR Code.
   You can view more details about QR Code unicode text encoding here:
   
4. Set the UnicodeMode property to choose a binary data encoding mode.
   Default is DataUnicodeMode.UTF8
   Most QR Code generator and scanner support UTF-8 encoding by default. data encoding. Using BarcodeLib QR Code C# generator library, you can choose one of the following encode mode.
   
   

   public enum DataUnicodeMode
   {
       UTF8,
       UTF7,
       UTF32,
       Unicode,
       UnicodeBE
   }
   

   Note: QR Code generators and readers must use the same binary encoding mode. UTF-8 is supported by default on most QR Code printers and scanners.

1. Set property UOM (Unit of Measure) for properties BarWidth, BarHeight, LeftMargin and TopMargin.
   Valid values are UnitOfMeasure.Pixel (0), UnitOfMeasure.CM (1), UnitOfMeasure.Inch (2).
   Default is UnitOfMeasure.Pixel (0).
   Web Stream URL Parameter: UOM. Valid values are: 0, 1, 2.
2. Set the ImageWidth and ImageHeight properties. Both types are float.
   ImageWidth default is 0. ImageHeight default is 0.
   Web Stream URL Parameter: ImageWidth and ImageHeight.
   The two properties define the generated QR Code image width and height. Since QR Code is in square shape,
   Note: Since the QR code is square, you need to set ImageWidth and ImageHeight to the same length. You can also simply set ImageWidth, and the QR Code generator library will automatically set ImageHeight to the same value.
3. Set the ResizeImage property to true and our component will resize the barcode image if manual setting is invalid.
   Type is bool. Default is false.
   Web Stream URL Parameter: ResizeImage.
4. Set the ModuleSize (for QR Code bar cell width and height)
   Type is float.
   Default is 3 pixels.
   Web Stream URL Parameter: ModuleSize.
   Note: If you want to manually set ModuleSize, you need to first set ResizeImage to false. When ResizeImage is true, the QR Code library will automatically calculate and select the maximum ModuleSize value.
5. Set the LeftMargin, RightMargin, TopMargin and BottomMargin properties.
   Types are all float. Default are 0.
   Web Stream URL Parameter: LeftMargin, RightMargin, TopMargin, BottomMargin.
   Note: According to the QR Code ISO standard, a QR code requires a quiet zone of at least 10X (where X is the bar module size). Otherwise, the QR code may not be recognized by scanners.
6. Set the Resolution property (Value is expressed in DPI - Dots per inch).
   Type is int. Default is 96 dpi.
   Web Stream URL Parameter: Resolution.

QR Code Advanced Features

1. Set Color Related properties.
   • Set the BackgroundColor property. Barcode background color can be changed.
     Type is System.Drawing.Color. Default is BackgroundColor = Color.White.
     Web Stream URL Parameter: BackgroundColor.
   • Set the ModuleColor property. Barcode bars color can be changed.
     Type is System.Drawing.Color.Default is ModuleColor = Color.Black.
     Web Stream URL Parameter: ModuleColor.
   • Set the ApplyCMYK property to true. If the printed QR Code image format is EPS, you can enable this property to true to use CMYK color mode in the EPS vector image file.
     The default value is false.
   • Property ResizeImagePaddingTransparent. Default is true.
     If this property is true, then any padding area around the QR Code will be transparent. Otherwise, the padding area will have the same color as the BackgroundColor.
2. Set QR Code with Logo image properties.
   • Property LogoImage. A Bitmap object containing QR Code logo image data.
   • Property LogoRenderSize. Type is SizeF. Specify the logo image dimension size in the center of the QR Code.
   • Property RemoveModulesUnderLogoImage. Default is false.
     Set RemoveModulesUnderLogoImage to true, and all QR Code bar modules that are partially covered by the logo image will be converted to space modules.
3. Set the ImageFormat property for barcode image format. The QR Code library supports QR Code output to raster and vector image formats.
   Type is BLImageFormat.
   Default value is BLImageFormat.PNG.
   Web Stream URL Parameter: ImageFormat. Valid values are: gif, jpg, png, bmp, tif, svg, eps.
   

   public enum BLImageFormat
   {
       PNG = 1,
       JPG = 2,
       BMP = 3,
       GIF = 4,
       TIF = 5,
       EPS = 10,
       SVG = 20
   }
   

1. Property IsThrowException. Default is false.
   When the QR Code generator library cannot create a QR Code successfully, the SDK will either generate an image with Invalid Barcode Settings text message printed, or through Exception in the .NET program.

1. Formats: QR Code, with full range of capabilities and maximum data capacity;
2. Encodable character set:
• numeric data (digits 0 - 9);
• alphanumeric data (digits 0 - 9; upper case letters A -Z; nine other characters: space, $ % * + - . / : );
• byte data (default: ISO/IEC 8859-1);
• Kanji characters.
3. Version (Symbol size) (not including quiet zone): 21 x 21 modules to 177 x 177 modules (Versions 1 to 40, increasing in steps of four modules per side).
   
4. Maximum QR Code symbol size, Version 40-L:
• numeric data: 7089 characters
• alphanumeric data: 4296 characters
• Byte data: 2953 characters
• Kanji data: 1817 characters
5. Selectable error correction level:
   Four levels of Reed-Solomon error correction (referred to as L, M, Q and H in increasing order of capacity) allowing recovery of:
• L 7% of the symbol codewords
• M 15% of the symbol codewords
• Q 25% of the symbol codewords
• H 30% of the symbol codewords
6. Structured Append: This allows files of data to be represented logically and continuously in up to 16 QR Code symbols.These may be scanned in any sequence to enable the original data to be correctly reconstructed.
7. Extended Channel Interpretations: This mechanism enables data using character sets other than the default encodable set (e.g. Arabic,Cyrillic, Greek) and other data interpretations (e.g. compacted data using defined compression schemes)or other industry-specific requirements to be encoded.
8. FNC1 Mode: FNC1 mode is used for messages containing specific data formats. In the "1st position" it designates data formatted in accordance with the GS1 General Specifications. In the "2nd position" it designates data formatted in accordance with a specific industry application previously agreed with AIM Inc. FNC1 mode applies to the entire symbol and is not affected by subsequent mode indicators.

1. Add Reference BarcodeLib.Barcode.ASP.NET.dll or BarcodeLib.Barcode.WinFroms.dll to your .NET project (ASP.NET website, Forms, any .NET project).
   In your .NET class:

     BarcodeLib.Barcode.QRCode barcode = new BarcodeLib.Barcode.QRCode();
     barcode.Data = "123456789012";

     barcode.ModuleSize = 3;
     barcode.LeftMargin = 0;
     barcode.RightMargin = 0;
     barcode.TopMargin = 0;
     barcode.BottomMargin = 0;

     barcode.Encoding = BarcodeLib.Barcode.QRCodeEncoding.Auto;
     barcode.Version = BarcodeLib.Barcode.QRCodeVersion.V1;
     barcode.ECL = BarcodeLib.Barcode.QRCodeErrorCorrectionLevel.L;
     barcode.ImageFormat = System.Drawing.Imaging.ImageFormat.Png;

     // more barcode settings here

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