public IEnumerable <ValidationResult> Validate(ValidationContext validationContext)
{
if (Address1 != null && Address2 != null && Address2.ToLower() == Address1.ToLower())
{
yield return(new ValidationResult("Address 2 cannot be the same as Address 1."));
}
if (State != null && State.Length != 2)
{
yield return(new ValidationResult("Enter a 2 digit State code."));
}
if (Zipcode != null && Zipcode.Length != 5)
{
yield return(new ValidationResult("Enter a 5 digit Zipcode."));
}
}
