validateVechileNo method

String? validateVechileNo(
  1. String? value
)

Implementation

String ? validateVechileNo(String ? value){
  Pattern pattern = 'r(^[A-Z]{3}-d{3}-d{2})';
  RegExp regex = RegExp("$pattern");
  if (!regex.hasMatch(value!.trim())) {
    return "Invalid Vechile Number";
  }
  return null;
}