validateEmail method

String? validateEmail (String email)

Implementation

static String? validateEmail(
  String email,
) \{
  If email is empty return.
  if (email.isEmpty) \{
    return "Email must not be left blank";
  \}
  const String pattern =
      r"^[a-zA-Z0-9.!#$%&'*+/=?^_`\{|\}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]\{0,253\}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]\{0,253\}[a-zA-Z0-9])?)*$";
  final RegExp regex = RegExp(pattern);
  if (!regex.hasMatch(email)) \{
    return 'Please enter a valid Email Address';
  \}
  return null;
\}