void ValidateIsBetweenRegistrationAndNowOr28(ref DateTimeErrorString error, DateTimeSplitter splitter, DateTime?now = null)
{
splitter.ValidateIsAfter(Strings.ParticipantModel_Error_RegistrationDateTime,
RegisteredAt,
ref error);
DateTime nowVal = now ?? DateTime.Now;
if (nowVal >= Becomes28On)
{
splitter.ValidateIsBefore(
string.Format(Strings.TimeInterval_28days, Becomes28On),
Becomes28On,
ref error);
}
else
{
splitter.ValidateIsBefore(
Strings.DateTime_Now,
nowVal,
ref error);
}
}
