How to Create a 2D Barcode

2D Barcodes

Each 2D barcode type supported by ImageGear has its own object type. ImageGear supports the creation of DataMatrix and PDF417 barcodes.

Object	Description
WriterDataMatrix	The class which can write out a DataMatrix barcode.
WriterPDF417	The class which can write out a PDF417 barcode.

Although the barcode engine supports reading of Aztec and QR Code, writing of these barcodes is not supported.

Basic Steps to Create a 2D Barcode

Instantiate the writer class for the barcode type you want to create.
Set the value you want to create.

Property	Description
BarcodeValue	This property gets or sets the value of the barcode to be created.
BarcodeValueAsByte	This property gets or sets the current barcode value as an array of bytes used only if non-ASCII text values are needed.

Call either the CreatePage method, Create method (to create an hDib) or the CreateBitmap method (to create a System.Drawing.Bitmap) from the instanced writer class. These methods will return an image with the desired barcode.

Method	Description
CreatePage	This method is the main method for creating ImGearPage barcodes.

Examples for PDF417 Barcodes

C# Example - Basic steps for writing PDF417 barcodes	Copy Code
//create the Barcode component ImageGear.Barcode.ImGearBarcode IGBarcodeWrite = new ImageGear.Barcode.ImGearBarcode(); //Create the writer PDF417 class ImageGear.Barcode.ImGearWriterPDF417 pdfWriter = new ImageGear.Barcode.ImGearWriterPDF417(IGBarcodeWrite); // Set the text value pdfWriter.BarcodeValue = "PDF417 Value"; //call Create and get resulting image myImGearPage = pdfWriter.CreatePage(); pdfWriter.Dispose();

C# Example - Basic steps for writing PDF417 barcodes

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//create the Barcode component
ImageGear.Barcode.ImGearBarcode IGBarcodeWrite = new ImageGear.Barcode.ImGearBarcode();
//Create the writer PDF417 class
ImageGear.Barcode.ImGearWriterPDF417 pdfWriter = new ImageGear.Barcode.ImGearWriterPDF417(IGBarcodeWrite);
// Set the text value
pdfWriter.BarcodeValue = "PDF417 Value";
//call Create and get resulting image
myImGearPage = pdfWriter.CreatePage();
pdfWriter.Dispose();

VB.NET Example - Basic steps for writing PDF417 barcodes	Copy Code
'create the Barcode component Dim IGBarcodeWrite As New ImageGear.Barcode.ImGearBarcode() 'Create the writer PDF417 class Dim pdfWriter As New ImageGear.Barcode.ImGearWriterPDF417(IGBarcodeWrite) ' Set the text value pdfWriter.BarcodeValue = "PDF417 Value" 'call Create and get resulting image myImGearPage = pdfWriter.CreatePage() pdfWriter.Dispose()

VB.NET Example - Basic steps for writing PDF417 barcodes

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'create the Barcode component
Dim IGBarcodeWrite As New ImageGear.Barcode.ImGearBarcode()
'Create the writer PDF417 class
Dim pdfWriter As New ImageGear.Barcode.ImGearWriterPDF417(IGBarcodeWrite)
' Set the text value
pdfWriter.BarcodeValue = "PDF417 Value"
'call Create and get resulting image
myImGearPage = pdfWriter.CreatePage()
pdfWriter.Dispose()

Examples for DataMatrix Barcodes

C# Example - Basic steps for barcode writing DataMatrix barcodes	Copy Code
//create the Barcode component ImageGear.Barcode.ImGearBarcode IGBarcodeWrite = new ImageGear.Barcode.ImGearBarcode(); //Create the writer data matrix class ImageGear.Barcode.ImGearWriterDataMatrix dmWriter = new ImageGear.Barcode.ImGearWriterDataMatrix(IGBarcodeWrite); // Set the text value dmWriter.BarcodeValue = "DataMatrix Value"; //call Create and get resulting image myImGearPage = dmWriter.CreatePage(); dmWriter.Dispose();

C# Example - Basic steps for barcode writing DataMatrix barcodes

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//create the Barcode component
ImageGear.Barcode.ImGearBarcode IGBarcodeWrite = new ImageGear.Barcode.ImGearBarcode();
//Create the writer data matrix class
ImageGear.Barcode.ImGearWriterDataMatrix dmWriter = new ImageGear.Barcode.ImGearWriterDataMatrix(IGBarcodeWrite);
// Set the text value
dmWriter.BarcodeValue = "DataMatrix Value";
//call Create and get resulting image
myImGearPage = dmWriter.CreatePage();
dmWriter.Dispose();

VB.NET Example - Basic steps for barcode writing DataMatrix barcodes	Copy Code
'create the Barcode component Dim IGBarcodeWrite As New ImageGear.Barcode.ImGearBarcode() 'Create the writer data matrix class Dim dmWriter As New ImageGear.Barcode.ImGearWriterDataMatrix(IGBarcodeWrite) ' Set the text value dmWriter.BarcodeValue = "DataMatrix Value" 'call Create and get resulting image myImGearPage = dmWriter.CreatePage() dmWriter.Dispose()

VB.NET Example - Basic steps for barcode writing DataMatrix barcodes

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'create the Barcode component
Dim IGBarcodeWrite As New ImageGear.Barcode.ImGearBarcode()
'Create the writer data matrix class
Dim dmWriter As New ImageGear.Barcode.ImGearWriterDataMatrix(IGBarcodeWrite)
' Set the text value
dmWriter.BarcodeValue = "DataMatrix Value"
'call Create and get resulting image
myImGearPage = dmWriter.CreatePage()
dmWriter.Dispose()