internal override string ValidValue(object aValue)
{
DesignByContract.Check.Require(aValue != null, string.Format(CommonStrings.XMustNotBeNull, "aValue"));
string dateTimeString = aValue.ToString();
if (!Iso8601DateTime.ValidIso8601DateTime(dateTimeString))
{
return(string.Format(AmValidationStrings.InvalidIsoDateTimeX, dateTimeString));
}
Iso8601DateTime isoDateTime = new Iso8601DateTime(dateTimeString);
if (isoDateTime == null)
{
throw new ApplicationException(string.Format(CommonStrings.XIsNull, "isoDateTime"));
}
if (this.Pattern != null)
{
if (!IsMatchPattern(isoDateTime))
{
return(string.Format(AmValidationStrings.DateTimeXDoesNotMatchPatternY, dateTimeString, Pattern));
}
}
if (this.Range != null)
{
if (!this.Range.Has(isoDateTime))
{
return(string.Format(AmValidationStrings.DateTimeXOutOfRange, dateTimeString));
}
}
return(string.Empty);
}
