# isValidOrThrow static method

void isValidOrThrow({

1. String fromString = '',
2. Uint8List? fromByteList,
3. ValidationMode validationMode = ValidationMode.strictRFC4122,
4. bool noDashes = false,

})

Validates the provided uuid to make sure it has all the necessary components and formatting and throws a FormatException if it is invalid. You can choose to validate from a string or from a byte list based on which parameter is passed. Optionally you can set `validationMode` to `ValidationMode.nonStrict` to allow for non RFC4122 compliant UUIDs. If you are using a Microsoft GUID, you should set `validationMode` to `ValidationMode.nonStrict`.

## Implementation

    static void isValidOrThrow(
        {String fromString = '',
        Uint8List? fromByteList,
        ValidationMode validationMode = ValidationMode.strictRFC4122,
        bool noDashes = false}) {
      final isValid = isValidUUID(
          fromString: fromString,
          fromByteList: fromByteList,
          validationMode: validationMode,
          noDashes: noDashes);

      if (!isValid) {
        // let's check if it is a non RFC4122 uuid and help the developer
        if (validationMode != ValidationMode.nonStrict) {
          final isValidNonStrict = isValidUUID(
              fromString: fromString,
              fromByteList: fromByteList,
              validationMode: ValidationMode.nonStrict,
              noDashes: noDashes);

          if (isValidNonStrict) {
            throw FormatException(
                'The provided UUID is not RFC4122 compliant. It seems you might be using a Microsoft GUID. Try setting `validationMode = ValidationMode.nonStrict`',
                fromString);
          }
        }

        throw FormatException('The provided UUID is invalid.', fromString);
      }
    }