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 Generator supports:

• 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

 

In C#

        Linear barcode = new Linear();
        barcode.Type = BarcodeType.CODE39;
        barcode.Data = "0123456789";
        barcode.drawBarcode("C://code39.gif");

In VB.NET

        Dim barcode As OnBarcode.Barcode.Linear
        barcode = New OnBarcode.Barcode.Linear()
        barcode.Type = OnBarcode.Barcode.BarcodeType.CODE39
        barcode.Data = "0123456789"
        barcode.drawBarcode("C://code39-in-vbnet.gif")

 

• 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 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" />
  
  

 

In C#

        Linear barcode = new Linear();
        barcode.Type = BarcodeType.CODE39;
        barcode.Data = "0123456789";
        barcode.drawBarcode("C://code39.gif");

In VB.NET

        Dim barcode As OnBarcode.Barcode.Linear
        barcode = New OnBarcode.Barcode.Linear()
        barcode.Type = OnBarcode.Barcode.BarcodeType.CODE39
        barcode.Data = "0123456789"
        barcode.drawBarcode("C://code39-in-vbnet.gif")

 

Using C#, please call one of the following methods to draw barcode in the memory

        public void drawBarcode(Graphics graphics);

        public void drawBarcode(string filename);

        public Bitmap drawBarcode();

        public void drawBarcode(Stream fileStream);

Using VB.NET, please call one of the following methods to draw barcode in the memory

        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);
	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.