.NET Barcode > .NET Barcode Generation Guide > .NET Barcode Postnet Generator for .NET, C#, ASP.NET, VB.NET

.NET Barcode Postnet Generator for .NET, C#, ASP.NET, VB.NET

.NET Barcode offers the most affordable .NET barcode generator for barcode .NET professionals.

.NET Postnet Introduction

Postnet is also known as USPS POSTNET Barcode, USPS POSTal Numeric Encoding Technique Barcode, Delivery Point Barcode (DPBC), Postnet 3 of 5

The POSTNET (POSTal Numeric Encoding Technique) barcode was developed by the US Postal Service to encode ZIP Code information on letter mail for rapid and reliable sorting by BCSs. The POSTNET barcode can represent a five-digit ZIP Code (32 bars), a six-digit ZIP Code (37 bars), a nine-digit ZIP+4 code (52 bars), or an eleven-digit delivery point code (62 bars).

.NET Barcode Generator - How to generate barcodes in C# Class?

The following C# .NET code illustrates how to generate a barcode in C# class:

using KeepDynamic.Barcode.Generator;

// Create linear barcode object in C#
BarCode barcode = new BarCode();

// Set barcode symbology type to Code-39 in C#
barcode.SymbologyType = SymbologyType.Code39;

// Set Code39 barcode value in C#
barcode.CodeText = "CODE39";

// Set Code39 drawing image format to PNG in C#
barcode.Format = ImageFormat.Png;

// Generate Code-39 barcode & encode to the png image in C#
barcode.drawBarcode("C://barcode-code39-csharp.png");

// Generate Code-39 barcode & print to System.Drawing.Graphics object in C#
barcode.drawBarcode("Graphics object");

// Create Code-39 barcode & draw to System.IO.Stream object in C#
barcode.drawBarcode("Stream object");

.NET Barcode Generator - How to create barcodes in VB.NET Class?

The following VB.NET code illustrates how to generate a barcode in VB.NET class:

// Create linear barcode object in VB.NET
Dim barcode As KeepDynamic.Barcode.Generator.BarCode
barcode = New KeepDynamic.Barcode.Generator.BarCode()

// Set barcode symbology type to Code-39 in VB.NET
barcode.SymbologyType = SymbologyType.Code39;

// Set Code39 barcode value in VB.NET
barcode.CodeText = "CODE39"

// Set Code39 drawing image format to PNG in VB.NET
barcode.Format = ImageFormat.Png

// Generate Code-39 barcode & encode to the png image in VB.NET
barcode.drawBarcode("C://barcode-code39-vbnet.png")

// Generate Code-39 barcode & print to System.Drawing.Graphics object in VB.NET
barcode.drawBarcode("Graphics object")

// Create Code-39 barcode & draw to System.IO.Stream object in VB.NET
barcode.drawBarcode("Stream object")

How to create barcodes in Windows Forms Applications

To create linear & 2D barcodes in Windows Forms applications, do the following procedures:

Add KeepDynamic.BarCode.Windows.dll to your C#, VB.NET project reference
Add KeepDynamic.BarCode.Windows.dll to windows project toolbox
Drag one of the BarCodeControl, DataMatrixControl, PDF417Control, QRCodeControl item to your windows forms

How to create barcodes in ASP.NET Web Forms Projects

To create linear & 2D barcodes in ASP.NET Web Forms applications, do the following procedures:

Add KeepDynamic.BarCode.AspNet.dll to your C#, VB.NET project reference
Add KeepDynamic.BarCode.AspNet.dll to windows project toolbox
Drag one of the BarCodeControl, DataMatrixControl, PDF417Control, QRCodeControl item to your ASP.NET Web form pages, in your ASP.NET design view

.NET POSTNET Barcodes Properties

Class Properties HTTP Parameters Default Comments

SymbologyType symbology-type SymbologyType.Code128 Barcode type. Value for POSTNET is SymbologyType.Postnet

CodeText code-text "" Barcode value to encode

EnableChecksum enable-checksum true Checksum for barcode value

GraphicsUnit graphics-unit GraphicsUnit.Pixel BarCode graphics meature for all size related settings. 0: pixel; 1: cm; 2: inch. Default is pixel

X x 2 Width of barcode module (narrow bar), default is 2 pixel

Y y 75 Barcode module height, default is 75 pixel

LeftMargin left-margin 0 Barcode image left margin

RightMargin right-margin 0 Barcode image right margin

TopMargin top-margin 0 Barcode image top margin

BottomMargin bottom-margin 0 Barcode image bottom margin

Resolution resolution 72 Barcode image resolution in dpi

Rotate rotate 0 Barcode rotate angle, valid values: 0, 90, 180, 270

DisplayCodeText display-code-text true If true, display barcode value text, otherwise do not display.

CodeTextFont code-text-font "Arial", Font.PLAIN, 11 Barcode text font style

Format format ImageFormat.Png Image format type. Using System.Drawing.Imaging.ImageFormat

Class Properties	HTTP Parameters	Default	Comments
SymbologyType	symbology-type	SymbologyType.Code128	Barcode type. Value for POSTNET is SymbologyType.Postnet
CodeText	code-text	""	Barcode value to encode
EnableChecksum	enable-checksum	true	Checksum for barcode value
GraphicsUnit	graphics-unit	GraphicsUnit.Pixel	BarCode graphics meature for all size related settings. 0: pixel; 1: cm; 2: inch. Default is pixel
X	x	2	Width of barcode module (narrow bar), default is 2 pixel
Y	y	75	Barcode module height, default is 75 pixel
LeftMargin	left-margin	0	Barcode image left margin
RightMargin	right-margin	0	Barcode image right margin
TopMargin	top-margin	0	Barcode image top margin
BottomMargin	bottom-margin	0	Barcode image bottom margin
Resolution	resolution	72	Barcode image resolution in dpi
Rotate	rotate	0	Barcode rotate angle, valid values: 0, 90, 180, 270
DisplayCodeText	display-code-text	true	If true, display barcode value text, otherwise do not display.
CodeTextFont	code-text-font	"Arial", Font.PLAIN, 11	Barcode text font style
Format	format	ImageFormat.Png	Image format type. Using System.Drawing.Imaging.ImageFormat

.NET Barcode Generator supports most common linear (1d) and matrix (2d) bar code standards, including:

2D Barcodes	Code-39 related	Code-128 related	Code-25 related	EAN/UPC related	Other Linear Barcodes
Data Matrix PDF-417 QR-Code	Code-39 Code-93	Code-128 GS1-128/UCC/EAN-128	Code 2 of 5 Interleaved 2 of 5 ITF-14 Identcode Leitcode	EAN-8 EAN-13 ISBN ISSN UPC-A UPC-E	Codabar Code-11 POSTNET PLANET USPS Intelligent Mail Barcode (OneCode) RM4SCC MSI Plessey