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ezBarcodeComponent Web Control
Getting Started
Setup ezBarcode Component
Examples
Trial and Redistributables
FAQ
ezBarcodeComponent Symbologies
CodaBar
Code 11
Code 128
Code 39
Code 39 Ext
Code 93
Code 93 Ext
Ean 13
Ean 8
Industrial 2 of 5
Interleaved 2 of 5
Ucc/Ean 128
MSI
Postnet
Planet
Telepen
Upc A
Upc E
IntelligentMail
Sscc 18
Scc 14
Itf 14
PDF 417
Macro PDF 417
DataMatrix
QR Code
ezBarcodeComponent.Web
Barcode Class
Barcode Members
Barcode Constructor
Properties
BarcodeImageFormat Property
BarHeight Property
BearerBarHorizontalWidth Property
BearerBarVerticalWidth Property
Caption Property
CaptionAlignment Property
CaptionColor Property
CaptionFont Property
CaptionPosition Property
CaptionSpace Property
CharacterGrouping Property
CheckCharacter Property
CheckCharacterInText Property
CODABARStartChar Property
CODABARStopChar Property
Code128Set Property
CodeData Property
DataMatrixBarSize Property
DataMatrixEncodingMode Property
DataMatrixPreferredFormat Property
HumanReadableTextFontColor Property
HumanReadableTextPosition Property
IsHumanReadableTextOnTop Property
LeftMargin Property
MacroPdf417FileId Property
MacroPdf417SegmentCount Property
MacroPdf417SegmentIndex Property
PDF417BarWidth Property
PDF417Columns Property
Pdf417CompactionType Property
Pdf417ErrorCorrectionLevel Property
PDF417Rows Property
Pdf417Truncated Property
PDF417YtoXRatio Property
Picture Property
PostnetHeightShort Property
PostnetHeightTall Property
PostnetSpacing Property
QRCodeBarSize Property
QRCodeEncoding Property
QRCodeErrorCorrectionLevel Property
QRCodeVersion Property
Resolution Property
RotationAngle Property
ShowHumanReadableText Property
SupplementarySeparation Property
Symbology Property
TopMargin Property
UPCESystem Property
UseCaret Property
WideToNarrowRatio Property
XDimension Property
Methods
Render Method
SaveImageAs Method
BarcodeImageFormat Enumeration
CaptionPosition Enumeration
Code128 Enumeration
DataMatrixEncodingModes Enumeration
DataMatrixPreferredFormats Enumeration
ImageGen Class
ImageGen Members
ImageGen Constructor
Properties
IsReusable Property
Methods
ProcessRequest Method
PDF417CompactionMode Enumeration
PDF417ErrorCorrection Enumeration
QRCodeEncoding Enumeration
QRCodeErrorCorrectionLevel Enumeration
QRCodeVersion Enumeration
RotationAngles Enumeration
stringProcess Class
stringProcess Members
stringProcess Constructor
Methods
DecodeString Method
EncodeString Method
Symbologies Enumeration
ezBarcodeComponent Help

QRCode Specification



QRCode (Quick Response Code) is a kind of 2-D (two-dimensional) symbology developed by Denso Wave and released in 1994 with the primary aim of being a symbol that is easily interpreted by scanner equipment. QR Code is capable of 360 degree (omni-directional), high speed reading. QR Code accomplishes this task through position detection patterns located at the three corners of the symbol. These position detection patterns guarantee stable high-speed reading, circumventing the negative effects of background interference.

Use Caret (^)
The UseCaret propeties is set to true by default which is only apply to Code128, UccEan128, Sscc18, Scc14, PDF417, MacroPDF417, QR Code, and DataMatrix etc. where full ASCII is accepted as encoding. The 3 digits data following the caret will be treated as ASCII code, e.g. ^010 is \n; ^009 is a tab; ^065 is character 'A'.

QRCode Properties
Besides the properties to general barcode, the following properties belongs to QRCode only:

QRCodeBarSize gets or sets the narrow bar size in inches for QRCode. Default is 0.02 inch.
QRCodeEncoding gets or sets the QR Code Encoding to use on that symbology.. Default is Auto encoding. Four type of mode available:
  • Binary: it is used to encode all 256 8-bit byte values.

  • Numeric: it is used to encode numeric data.

  • Alphanumeric: it is used to encode all printable ASCII character data.

  • Auto: it switches between the other three encoding method for small size.
QRCodeErrorCorrectionLevel gets or sets the Error Correction Level for QRCode (Level L, M, Q, H). Default is M.
QRCodeVersion gets or sets the QRCode Version. Default is Auto.



QRCode examples by using ezBarcodeComponent
[C#]

        using ezBarcodeComponent.Winform; 

        //create barcode class
        Barcode barcode1 = new Barcode(); 
                                                                        
        //Specify the CodeData to encode
        barcode1.CodeData = "0123456789";
        //Set the Symbology to QRCode
        barcode1.Symbology = Symbologies.QRCode;
   barcode1.UseCaret= true;



   //Save the image
        barcode1.SaveImageAs("QRCode.gif", System.Drawing.Imaging.ImageFormat.Gif);


[Vb.net]
      'create barcode class
        Dim barcode1 As New Barcode
                                                                
        'Specify the CodeData to encode 
        barcode1.CodeData = "0123456789"
        'Set the Symbology to QRCode
 barcode1.Symbology = Symbologies.QRCode
        barcode1.UseCaret= True



   'Save the image  
        barcode1.SaveImageAs("QRCode.gif", System.Drawing.Imaging.ImageFormat.Gif)
                        
Example of QRCode barcode images.