Generating Barcode QR-Code in .NET is one of the functions in OnBarcode's .NET Barcode Generators, which supports creating & printing QR-Code and 30+ other linear & 2D bar codes for C#, VB.NET & ASP.NET applications.

OnBarcode develops several .NET Barcode Generation components for different .NET development environments:

Barcode Generation in ASP.NET - Creating barcodes in ASP.NET Web applications
Barcode Generation in Windows Forms - Printing barcodes in C#, VB.NET Windows Forms applications
Barcode Generation in Reporting Service - Drawing barcodes in Microsoft Reporting Service 2005 & 2008

 

.NET QR-Code Generator - Barcode QR-Code Introduction

QR Code is a matrix code (or two-dimensional bar code) created by Japanese corporation Denso-Wave in 1994. The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed.

 

.NET QR-Code Generation - QR-Code Valid Data Scope

.NET QR Code Generator encodes:

• 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.

 

Generating barcode QR-Code in C# Class example (C# Source Code to Create QR-Code barcodes)

	        QRCode qrcode = new QRCode();
	        qrcode.Data = "0123456789";
	        qrcode.X = 3;
	        
	        // Generate QR-Code and encode barcode to gif format
	        qrcode.Format = ImageFormat.Gif;
	        qrcode.drawBarcode("c#-qrcode.gif");
	        
	        // Print QR-Code to C# Bitmap object
	        Bitmap qrcodeBitmap = qrcode.drawBarcode();

Generating barcode QR-Code in VB.NET Class example

	        Dim qrcode As OnBarcode.Barcode.QRCode
	        qrcode = New OnBarcode.Barcode.QRCode()
	        qrcode.Data = "0123456789"
	        qrcode.X = 3
	        
	        // Generate QR-Code and encode barcode to png format
	        qrcode.Format = ImageFormat.Png
	        qrcode.drawBarcode("vbnet-qrcode.png")
	        
	        // Print QR-Code to vb.net Bitmap object
	        Dim qrcodeBitmap As Bitmap
	        qrcodeBitmap = qrcode.drawBarcode();

 

• Under demo package, copy barcode folder and its contents to your IIS, and create a new virtual directory.
  
  
• Restart IIS, navigate to http://YourDomain:Port/barcode/qrcode.aspx?DATA=0123456789
  
  
• To create barcode QR-Code image in html or aspx pages, you can insert a image tag (img) into your page.
  For example, <img src="http://YourDomain:Port/barcode/qrcode.aspx?DATA=0123456789" />
  
  

 

Creating QR-Code image in C# Class example

	        QRCode qrcode = new QRCode();
	        qrcode.Data = "0123456789";
	        qrcode.X = 3;
	        
	        // Create QR-Code and encode barcode to Jpeg format
	        qrcode.Format = ImageFormat.Jpeg;
	        qrcode.drawBarcode("C://csharp-qrcode.jpg");

Creating QR-Code image in VB.NET Class example

	        Dim qrcode As OnBarcode.Barcode.QRCode
	        qrcode = New OnBarcode.Barcode.QRCode()
	        qrcode.Data = "0123456789"
	        qrcode.X = 3
	        
	        // Create QR-Code and encode barcode to Jpeg format
	        qrcode.Format = ImageFormat.Jpeg
	        qrcode.drawBarcode("C://vbnet-qrcode.jpg")

 

To draw & print barcode QR-Code to C# objects:

	        public void drawBarcode(Graphics graphics);
	
	        public void drawBarcode(string filename);
	
	        public Bitmap drawBarcode();
	
	        public void drawBarcode(Stream fileStream);

To draw & print barcode QR-Code to VB.NET objects:

	        Public Sub drawBarcode(ByRef graphics As Graphics)
	
	        Public Sub drawBarcode(ByVal filename As String)
	
	        Public Function drawBarcode() As Bitmap
	
	        Public Sub drawBarcode(ByRef fileStream As Stream)

 

1. Add OnBarcode.Barcode.WinForms.dll to .net project reference
   
   
2. Add .NET Barcode to .NET Visual Studio Toolbox
   
   
   1. Right click .NET Visual Studio Toolbox, select menu Choose Items...
      
      
   2. In "Choose Toolbox Items" form, click button "Browse...", and select dll OnBarcode.Barcode.WinForms.dll
      
      
   3. After selection, you will find four items under "Components" section: LinearWinForm, DataMatrixWinForm, PDF417WinForm, and QRCodeWinForm.

 

1. Add OnBarcode.Barcode.ASPNET.dll to asp.net project reference
   
   
2. Add .NET Barcode to .NET Visual Studio Toolbox
   
   
   1. Right click .NET Visual Studio Toolbox, select menu Choose Items...
      
      
   2. In "Choose Toolbox Items" form, click button "Browse...", and select dll OnBarcode.Barcode.ASPNET.dll
      
      
   3. After selection, you will find four items under "Components" section: LinearWebForm, DataMatrixWebForm, PDF417WebForm, and QRCodeWebForm.

 

Category	Class Properties	WebStream Properties	Default	Comments
Basic	Data	DATA	"QRCode"	value to encode
QRCode Special	ProcessTilde	PROCESS-TILDE	true	Set the ProcessTilde property to true, if you want use the tilde character "~" to specify special characters in the input data. Default is true. ~NNN: is used to represent the ASCII character with the value of NNN. NNN is from 000 - 255.
	DataMode	DATA-MODE	QRCodeDataMode.Auto (0)	QRCodeDataMode.Auto: It allows encoding all 256 possible 8-bit byte values. This includes all ASCII characters value from 0 to 127 inclusive and provides for international character set support QRCodeDataMode.AlphaNumeric: It allows encoding alphanumeric data (digits 0 - 9; upper case letters A -Z; nine other characters: space, $ % * + - . / : ). QRCodeDataMode.Byte: It allows encoding byte data (default: ISO/IEC 8859-1). QRCodeDataMode.Numeric: It allows encoding numeric data (digits 0 - 9). QRCodeDataMode.Kanji: It allows encoding Kanji characters.
	ECL	ECL	QRCodeECL.L (0)	QRCode Error Correction Level. Default is QRCodeECL.L (0). QRCodeECL.L (0) QRCodeECL.M (1) QRCodeECL.Q (2) QRCodeECL.H (3)
	ECI	ECI	3	Valid values are from 000000 to 999999.
	FNC1	FNC1	FNC1.FNC1_NONE (0)	valid values are: FNC1.FNC1_NONE (0), FNC1.FNC1_1ST_POS (1), FNC1.FNC1_2ND_POS (2)
	ApplicationIndicator	AI	0	-
	StructuredAppend	STRUCTURED-APPEND	false	Set StructuredAppend property to true, then Structured Append is enabled.
	SymbolCount	SYMBOL-COUNT	0	the number of total symbols which make the sequence.
	SymbolIndex	SYMBOL-INDEX	0	the position of current symbol in the secuence (Start with 0).
	Parity	PARITY	0	-
	Version	VERSION	1	Valid values are from 1 to 40.
Size Related	UOM	UOM	UnitOfMeasure.PIXEL (0)	Unit of meature for all size related setting in the library. Valid values: UnitOfMeasure.PIXEL (0), UnitOfMeasure.CM (1), UnitOfMeasure.INCH (2)
	X	X	3	barcode module width and height, default is 3 pixel
	BarcodeWidth	BARCODE-WIDTH	0	barcode image width
	BarcodeHeight	BARCODE-HEIGHT	0	barcode image height
	LeftMargin	LEFT-MARGIN	0	image left margin
	RightMargin	RIGHT-MARGIN	0	image right margin
	TopMargin	TOP-MARGIN	0	image top margin
	BottomMargin	BOTTOM-MARGIN	0	image bottom margin
	Resolution	RESOLUTION	72	in DPI
	Rotate	ROTATE	Rotate.Rotate0 (0)	valid values: Rotate.Rotate0 (0), Rotate.Rotate90 (1), Rotate.Rotate180 (2), Rotate.Rotate270 (3)
In WebStream query string, please use int value for Enums, "true" and "false" for bool.