![]() Set property Unit of Measure (Unit of Measure) for properties Bar Width, Bar Height, Margins.Barcode Library will always add a check character in the last digit (modulo 10). Add checksum char property is not applied here.Provide 2 digits for barcode type UPC-A +2, and provide 5 digits for type UPC-A +5. Set the Supplement data property with the supplement value to encode. ![]() There are totally 12 digits in UPC-A barcode, first 11 digits are barcode value, and last digit is the checksum digit, which is generated by barcode library automatically. User should only provide 11 digits, and DO NOT include last digit checksum character.
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