I have two properties:
public int? Inicio {get; set;}
public int? Final {get; set;}
Both accept nulls and are not required. I wanted to check if the two are null using Data Annotation . The operation would look something like Compare Data Annotation. , but checking if the value of the two properties are null.
When it involves two fields, the correct one is to decorate your Model with IValidatableObject " as follows:
public class MeuModel : IValidatableObject
{
public int? Inicio {get; set;}
public int? Final {get; set;}
public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
{
/* Verifique aqui as variáveis.
Em caso de problemas, devolva erros usando:
yield return new ValidationResult("Mensagem de erro.", new[] { "CampoEnvolvido1", "CampoEnvolvido2" });
*/
}
}
You can create a new notation for this so I sent below how you will override the is valid method
