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We often receive emails suggesting that the SDK is outputting incorrect characters at the start or end of a Codabar barcode. This is normally down to confusion over how codabar characters should be interpreted at the end of a barcode….

Codabar barcodes can start and end with with of 4 patterns:

bars 0100, Spaces 011 = a or A or t or T

Bars 0001, Spaces 110 = b or B or n or N

Bars 0001, Spaces 011 = c or C or *

Bars 0010, Spaces 011 = d or D or e or E

The SDK has the policy of using “a” or “b” or “c” or “d” at the start and “t” or “n” or “*” or “e” at the end, but this behavior can be changed through use of the ShowCodabarStartStop property…

0 = Don’t display start/stop characters

1 = Use “a” or “b” or “c” or “d” at the start and “t” or “n” or “*” or “e” at the end (default)

2 = Use “A” or “B” or “C” or “D” at the start and “T” or “N” or “*” or “E” at the end

3 = Use “A” or “B” or “C” or “D” at the start and end.

So if you have a Codabar barcode that has the printed text A12345A underneath then the following values of ShowCodabarStartStop will output the text….

0 = 12345

1 = a12345t

2 = A12345T

3 = A12345A