CompositeValidator - Parametric/Simple.Validation GitHub Wiki

CompositeValidator is used to aggregate the results of other validators into a single result set. Most commonly it will be used in conjunction with the fluent Properties API. The inheritor must override the GetInternalValidators() method.

    public class SaveAddressValidator : CompositeValidator<Address>
    {
        public override bool AppliesTo(string rulesSet)
        {
            return rulesSet == RulesSets.Crud.Save;
        }

        protected override IEnumerable<IValidator<Address>> GetInternalValidators()
        {
            yield return Properties<Address>.
                For(a => a.Line1)
                .Length(0, 50)
                .Required()
                .Message("Address Line 1 is required.");

            yield return Properties<Address>
                .For(a => a.Line2)
                .Length(0, 50)
                .NotRequired()
                .Message("Line 2 must be between 0 and 50 characters in length.");

            yield return Properties<Address>
                .For(a => a.Line3)
                .Length(0, 50)
                .NotRequired()
                .Message("Line 3 must be between 0 and 50 characters in length.");

            yield return Properties<Address>
                .For(a => a.PostalCode)
                .Length(0, 20)
                .NotRequired()
                .Message("Postal Code must be between 0 and 20 characters in length.");

            yield return Properties<Address>
                .For(a => a.Country)
                .Length(0, 3)
                .NotRequired()
                .Message("Country must be between 0 and 3 characters in length.");

            yield return Properties<Address>
                .For(a => a.StateOrProvince)
                .Length(0, 50)
                .NotRequired()
                .Message("StateOrProvince must be between 0 and 50 characters in length.");

        } 
    }