Generating Barcode Postnet in .NET is one of the functions in OnBarcode's .NET Barcode Generators, which supports creating & printing Postnet 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 Postnet Generator - Barcode Postnet Introduction

POSTNET (Postal Numeric Encoding Technique) is a barcode symbology that is used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars.

 

.NET Postnet Generation - Postnet Valid Data Scope

.NET Postnet Generator encodes:

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

 

Generating barcode Postnet in C# Class example

	        Linear postnet = new Linear();
	        postnet.Type = BarcodeType.POSTNET;
	        postnet.Data = "0123456789";
	        postnet.X = 1;
	        postnet.Y = 60;
	        
	        // Generate Postnet and encode barcode to gif format
	        postnet.Format = ImageFormat.Gif;
	        postnet.drawBarcode("c#-postnet.gif");
	        
	        // Print Postnet to C# Bitmap object
	        Bitmap postnetBitmap = postnet.drawBarcode();

Generating barcode Postnet in VB.NET Class example

	        Dim postnet As OnBarcode.Barcode.Linear
	        postnet = New OnBarcode.Barcode.Linear()
	        postnet.Type = OnBarcode.Barcode.BarcodeType.POSTNET
	        postnet.Data = "0123456789"
	        postnet.X = 1
	        postnet.Y = 60
	        
	        // Generate Postnet and encode barcode to png format
	        postnet.Format = ImageFormat.Png
	        postnet.drawBarcode("vbnet-postnet.png")
	        
	        // Print Postnet to vb.net Bitmap object
	        Dim postnetBitmap As Bitmap
	        postnetBitmap = postnet.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/linear.aspx?DATA=0123456789&TYPE=4
  
  
• To create barcode Postnet image in html or aspx pages, you can insert a image tag (img) into your page.
  For example, <img src="http://YourDomain:Port/barcode/linear.aspx?DATA=0123456789&TYPE=4" />
  
  

 

Creating barcode Postnet in C# Class example

        Linear postnet = new Linear();
        postnet.Type = BarcodeType.POSTNET;
        postnet.Data = "0123456789";
        postnet.drawBarcode("C://postnet.gif");

Creating barcode Postnet in VB.NET Class example

        Dim postnet As OnBarcode.Barcode.Linear
        postnet = New OnBarcode.Barcode.Linear()
        postnet.Type = OnBarcode.Barcode.BarcodeType.POSTNET
        postnet.Data = "0123456789"
        postnet.drawBarcode("C://postnet-in-vbnet.gif")

 

To draw & print barcode Postnet 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 Postnet 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	"12345"	value to encode
	Type	TYPE	BarcodeType.CODE128 (7)	linear barcode type, default is Code128. Postnet type value is BarcodeType.POSTNET (34).
	AddCheckSum	ADD-CHECK-SUM	true	AddCheckSum property is not applied here. .NET Barcode will automatically add one checksum character using Modulo 10.
Postnet Special	ShortTallRatio	SHORT-TALL-RATIO	0.4f	short bar vs tall bar ratio
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	1	width of barcode module (narrow bar), default is 1 pixel
	Y	Y	60	barcode module height, default is 60 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)
Text & Color	ShowText	SHOW-TEXT	true	If true, display barcode data text, otherwise do not display.
	ShowCheckSumChar	SHOW-CHECK-SUM-CHAR	true	If true, display the check sum character in the end of data, if there is a check sum.
	TextFont	TEXT-FONT	Arial, Plain, 11	Barcode text font style. default is: new Font("Arial", 9f, FontStyle.Regular); Using website, using: &TEXT-FONT=Arial|9|regular
	TextMargin	TEXT-MARGIN	6	Space between barcode and barcode data text, default is 6 pixel
In WebStream query string, please use int value for Enums, "true" and "false" for bool.