C#. QR Code Generator Data Encoding Tutorial

sample source code to input valid data and generate 2D QR Code images in C# .NET

• C# QR Code Introduction
• Encode QR Code Valid Character set in C#.NET

Generate QR Code Barcodes in C#.NET Using Alphanumeric Mode

Create QR Code Barcodes in C#.NET Using Numeric Mode

Print QR Code Barcodes in C#.NET Using Byte Mode

Make QR Code Barcodes in C#.NET Using Kanji Mode

• Modify QR Code Valid Length in C#.NET

QR Code, also known as Denso Barcode, QRCode, Quick Response Code, is a kind of 2D (two dimensional) barcode widely used today.

C# QR Code barcode is .NET barcode generating SDK, which is a user-friendly, light weight barcode component for making QR Code barcodes in C#.NET Winforms application, C#.NET ASP.NET Web forms applications, C#.NET class and console applications. This document provides 100% C# source code to explain how to encode QR Code valid data with .NET Barcode suite using C# class.

OnBarcode C# Barcode Generator is designed to generate, create QR Code and other linear & 2d barcodes in Microsoft Word. Here are some more tutorials for C# QR Code generation concerning size & image setting.

• Samples for QR Code Size Setting using C#


• Samples for QR Code Image Setting using C#

QR Code valid character set:

Numeric data

Alphanumeric data

Byte characters

Kanji characters

Encode Alphanumeric Character into QR Code Using C#.NET class

It allows encoding alphanumeric data, including digits 0 - 9; upper case letters A -Z; and nine other characters: space, $ % * + - . / : .

QRCode barcode = new QRCode();

barcode.Data = "OnBarcode";

barcode.DataMode = QRCodeDataMode.Alphanumeic;

barcode.Format = ImageFormat.Png;

barcode.drawBarcode("c:/qrcode.png");

Encode Numeric into QR Code Using C#.NET class

It allows encoding numeric data (digits 0 - 9).

QRCode barcode = new QRCode();

barcode.Data = "123456789";

barcode.DataMode = QRCodeDataMode.Numeric;

barcode.Format = ImageFormat.Png;

barcode.drawBarcode("c:/qrcode.png");

Encode Byte Characters into QR Code Using C#.NET class

It allows encoding byte data (default: ISO/IEC 8859-1).

QRCode barcode = new QRCode();

barcode.Data = "$ % * + - . / ";

barcode.DataMode = QRCodeDataMode.Byte;

barcode.Format = ImageFormat.Png;

barcode.drawBarcode("c:/qrcode.png");

Encode Kanji Characters into QR Code Using C#.NET class

It allows encoding Kanji characters. Please see SJIS (Shift JIS encoding): from ~9ddddd (Shift JIS 0x8140 ~ 0x9FFC and 0xE040 ~ 0xEBBF)

QRCode barcode = new QRCode();

barcode.Data = "~937727";

barcode.ProcessTild = True;

barcode.DataMode = QRCodeDataMode.Kanji;

barcode.Format = ImageFormat.Png;

barcode.drawBarcode("c:/qrcode.png");

QR Code is variable-length 2-dimensional barcodes, the storage capacity see the table below:

The length of QR Code is determined by the length of encoding data, for example:

barcode.Data = "1"; // in 1-digit length

barcode.Data = "123456789"; // in 9-digit length

barcode.Data = "12345678901234567890"; // in 20-digit length