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Code 39 Extended

This topic describes how to insert a barcode control of the Code 39 Extended symbology (code type) into a report. In addition, it gives a short description of the Code 39 Extended code type. To learn more about barcodes in XtraReports see the Barcodes Overview topic.

It is possible, using the Code 39's "Full ASCII Mode" to encode all 128 ASCII characters. This is accomplished by using the $, /, %, and + symbols as "shift" characters. These characters combined with the single character that follows indicate which Full ASCII character is to be used.

The following properties should be set to specify a particular barcode of the Code 39 Extended type:

• BarCodeGeneratorBase.CalcCheckSum. This property is used to specify whether to calculate a checksum for the barcode or not. The default value is true.
• Code39Generator.WideNarrowRatio. This property is used to specify the density of a barcode's bars. The value assigned should be between 2.2 and 3, inclusive.

The Code 39 Extended barcode, as opposed to Code 39, automatically replaces all necessary characters with special symbols, when required. This means that you don't need to do this manually, otherwise, the result will be incorrect.

For example, if you want to insert a "TAB" character into a barcode's text, simply use "\t", which will be replaced by "$I" for coding, and then into "TAB" after scanning:

See also