dobValidation static method

String? dobValidation(
  1. String date,
  2. String? dateFormat
)

Implementation

static String? dobValidation(String date,String? dateFormat) {
  if (date.isEmpty ||
      date.length != 10 ||
      !isValidDate(dateFormat??"MM-dd-yyyy", date) ||
      !isPastDate(date,dateFormat??"MM-dd-yyyy")) {
    return "Enter valid date";
  }
  return null;
}