How do I get an Annotation date, to be able to access value from another property?

Question

I have my following properties:

public ETipoPessoa TipoPessoa {get;set;}
public string CnpjCPF {get;set;}

public enum ETipoPessoa {
     Fisica,
     Juridica
}

I have this condition, if Type = Physical, I need to pass an Annotation that validates the CPF, otherwise Type = Legal validate the CNPJ

So, as I do an Annotation date, I can access value from another property ?

That is, my Annotation has to take the value that came from the Typopessoa, to validate what is what...

Answer 1

It is not yet what you want, but there is a way to make a validation at the level of the Model.

public class Pessoa : IValidatableObject
{
    public ETipoPessoa TipoPessoa {get;set;}
    public string CnpjCPF {get;set;}

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var validations = new List<ValidationResult>();

        if (TipoPessoa == ETipoPessoa.Fisica)
        {
            bool cpfValido;
            ... // validação de CPF
            if (!cpfValido)
                validations.Add(new ValidationResult("CPF Inválido"));
        }

        if (TipoPessoa == ETipoPessoa.Juridica)
        {
            bool cnpjValido;
            ... // validação de CNPJ 
            if (!cnpjValido)
                validations.Add(new ValidationResult("CNPJ Inválido"));
        }
        return validations;
    }
}