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The null character represents a portion of a data string that contains no information. In BarTender, you can use the null character (NUL) when defining binary data strings, encoding barcodes, and as part of a custom Visual Basic Script (VBScript).

Unless otherwise mentioned below, you can insert the null character into an object using the Insert Symbols or Special Characters dialog.

Binary Data

When Unicode data containing the value "0xEF00" is encoded into a barcode that supports binary encoding, it will be converted into a null character.

Barcodes

Certain barcode symbologies support 8-bit encoding and/or the use of the NUL character. For any symbology that supports binary encoding, BarTender assumes that a barcode's value is binary if either of the following conditions are true:

• An embedded data source contains a NUL character.

• Any data source contained in the barcode object is set to the binary data type.

The following symbologies support the use of the NUL character:

• All 2D symbologies

• Code 39

• Code 93

• Code 128

• PosiCode A and B (PosiCode Limited not supported)

VBScript

When writing custom VBScripts in BarTender, you can refer to the NUL character using the Unicode value "0xEF00". Note that this value is supported only for objects which support binary data.

Related Topics

• Insert Symbols or Special Characters Dialog