BarCodeException.cs

    public enum ErrorCodes
    {
        NotNumeric,
        BadFormat,
        ChecksumError
    }

    public class BarCodeException : ArgumentException
    {
        public ErrorCodes ErrorCode { get; private set; }

        public BarCodeException()
            : base() { }

        public BarCodeException(string message)
            : base(message) { }

        public BarCodeException(string format, params object[] args)
            : base(string.Format(format, args)) { }

        public BarCodeException(string message, Exception innerException)
            : base(message, innerException) { }

        public BarCodeException(string format, Exception innerException, params object[] args)
            : base(string.Format(format, args), innerException) { }

        protected BarCodeException(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context)
            : base(info, context) { }

        public BarCodeException(ErrorCodes errorCode)
            : base()
        {
            ErrorCode = errorCode;
        }

        public BarCodeException(string message, ErrorCodes errorCode)
            : base(message)
        {
            ErrorCode = errorCode;
        }
    }