DataFlex Web Service for testing ISBN Numbers
DataFlex Web Service to validate ISBN numbers.
The following operations are available. For a formal definition, please review the
Service Description.
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IsValidISBN13
The test is done by calculation on the first 12 digits and compare the result with the checksum number at the end. You have to pass a 13 digits number.
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IsValidISBN10
The test is done by calculation on the first 9 digits and compare the result with the checksum number at the end. You have to pass a 10 digits number or 8 digits and an X.