C# QR Code Generator Library
QR Code Image Generation Tutorial
Create QR Code Barcode on C# Images, TIFF, PDF, Word, Excel and PowerPoint
In this C# tutorial, you will learn how to create a QR Code 2d barcode image using C# in ASP.NET MVC Web, Windows applications.
- Generate high quality QR Code barcode images
- Advanced options for barcode size, barcode color, and QR Code data encoding
- Generate GS1 compatible QR Code, and QR Code for international text
- Draw, print QR Code in PNG, JPG, and Bitmap raster images
- Create QR Code in PDF, TIFF, Office Word, Excel, PowerPoint files
How to create a QR Code in JPG, PDF, Tiff, Word, BMP file using C#
By using this .NET QR Code barcode generator add-on component, developers can create & draw scannable QR Codes on different image files (png, jpeg, gif and bmp) and insert them into common documents like TIFF, PDF, MS Word, Excel and PowerPoint using Visual C#.NET programming code. Following are some barcoding features offered by this .NET QR Code encoder DLL.
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- Written in C# managed code, compatible with .NET Framework 2.0 and above
- Generating, writing QR Code bar codes on PNG, JPG, GIF, and BMP image files with specified location
- C# tutorial and sample codes to draw, insert QR Codes in PDF, TIFF, MS Word, Excel and PowerPoint
- Control QR Code barcode size by setting size related properties
- Use C# code to adjust bar code image format, location, resolution, orientation, version, color and more
- Compatible with ISO+IEC+18004 QR Code bar code symbology specification
QR Code barcode data encoding in C#
Encode character set and QR Code data mode
QR Code support encoding the following characters.
- Numeric data (digits 0 - 9)
- Alphanumeric data (0 - 9; A -Z; nine other characters: space, $ % * + - . / : )
- Byte data
- Kanji characters
QR Code data mode
To encode the above character sets, QR Code defines five encoding data modes.
- Auto
- Numeric
- AlphaNumeric
- Byte
- Kanji
QR Code maximum data length
Maximum characters per QR Code barcode with Version 40-L
- numeric data: 7,089 characters
- alphanumeric data: 4,296 characters
- byte data: 2,953 characters
- Kanji data: 1,817 characters
QR Code error correction mode
Four levels of Reed-Solomon error correction (referred to as L, M, Q and H in increasing order of capacity) allowing recovery of the QR Code barcode data.
Using XImage.Barcode Generator C# library, class QRCode has provided the property ECL. You can set one of the following values from
RasterEdge.XImage.BarcodeCreator.QRCodeECL
- L: 7% (QRCodeECL.H)
- M: 15% (QRCodeECL.M)
- Q: 25% (QRCodeECL.Q)
- H: 30% (QRCodeECL.H)
QR Code Special Characters Encoding using C#
How to generate GS1 QR Code using C#
GS1 QR Code barcode is a standalone, two-dimensional matrix symbology that is made up of square modules arranged in an overall square pattern,
including a unique finder pattern located at three corners of the barcode symbol.
To create valid GS1 QR Code using C# QR Code library, you need apply the following properties with valid value or formats.
- FNC1: The value should be RasterEdge.XImage.BarcodeCreator.FNC1.FNC1_1ST_POS.
- Data: Valid GS1 data message includes pairs of AI code and AI data. Using QR Code C# library, all AI codes should be surrounded by parentheses. For example:
(11)010101(15)020202
How to encode Kanji characters in QR Code using C#
Apply the following settings to encode Kanji characters in QR Code C# barcode generator library:
- ProcessTilde: Set to enable '~' in data message.
- DataMode:It should be RasterEdge.XImage.BarcodeCreator.QRCodeDataMode.Kanji
How to encode international characters in QR Code using C#
To encode international characters in QR Code, you need convert internation text to byte array using UTF-8 encode, and generate QR Code using byte mode.
Following properties should be applied to generate international characters in QR Code using C#:
- ProcessTilde: Set to enable '~' in data message.
- DataMode:It should be RasterEdge.XImage.BarcodeCreator.QRCodeDataMode.Byte
- Data: The international characters should be converted to byte array using UTF8 encoding.
RasterEdge.XImage.BarcodeCreator.QRCode qrcode = new RasterEdge.XImage.BarcodeCreator.QRCode();
string message = "สวัสดี";
byte[] bytes = Encoding.UTF8.GetBytes(message);
StringBuilder messageInBytes = new StringBuilder();
foreach (byte b in bytes)
messageInBytes.Append("~" + b.ToString().PadLeft(3, '0'));
qrcode.Data = messageInBytes.ToString();
qrcode.ProcessTilde = true;
qrcode.DataMode = RasterEdge.XImage.BarcodeCreator.QRCodeDataMode.Byte;
// Set barcode size to 2 inch x 2 inch
qrcode.AutoResize = true;
qrcode.UOM = RasterEdge.XImage.BarcodeCreator.UnitOfMeasure.INCH;
qrcode.BarcodeWidth = 2F;
qrcode.BarcodeHeight = 2F;
// Set image resolution to 300 dpi.
qrcode.Resolution = 300;
// Set all margins to 0
qrcode.LeftMargin = 0;
qrcode.RightMargin = 0;
qrcode.TopMargin = 0;
qrcode.BottomMargin = 0;
Bitmap qrcodeBitmap = qrcode.ToImage();
qrcodeBitmap.Save(@"W:\Projects\Test-Output\RasterEdge.com\barcode-qrcode-international-byte.png");
How to create QR Code barcode in PDF file with web link added using C#.NET
We have provided complete C# source code to generate QR Code barcodes in PDF, Tiff, MS Office Word/Excel/PowerPoint and image files.
