C# (CSharp) ISBNFormat Examples

Example #1

File: ISBN.cs Project: damon-e-drake/barcodes

        public static string ISBNConvert10To13(this string isbn10, ISBNFormat format = ISBNFormat.None)
        {
            var isbn = isbn10.Replace(" ", "").Replace("-", "");

            if (!Regex.IsMatch(isbn, @"^(\d{9}|\d{10}|\d{9}[Xx])$"))
            {
                throw new FormatException("ISBN 10 must be either 9 or 10 digits optinally with an x or X as the 10 character.");
            }

            var s = "978" + isbn[..9];

Example #2

        public void CreateValidISBNTest(string value)
        {
            ISBNFormat isbn = new ISBNFormat(value);

            Assert.AreEqual(value, isbn.Value);
        }