The POSTNET (Postal Numeric Encoding Technique), represented by the Postnet class, is a barcode symbology that encodes a five-digit ZIP code, a ZIP+4, a nine-digit code, or an 11-digit delivery point code. The United States Postal Service uses this barcode.

The following example uses a Postnet barcode in DynamicBarcode Creator.

Postnet barcode = new Postnet("20815470412");
barcode.Draw(pngFilePath, 300, ImageFormat.Png);        
Dim barcode As Postnet = New Postnet("20815470412")
barcode.Draw(pngFilePath, 300, ImageFormat.Png)

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