Combine multiple ValidationResults

Is your feature request related to a problem? Please describe.

No, just a useful method that I could not find in the lib. Is there any “native” way to combine/join multiples ValidationResult’s?

Describe the solution you’d like

It is very useful to combine/join mutiples ValidationResults into a new ValidationResults, for example…

  ValidationResult fullValidation = new[]
  {
      ValidationA(obj),
      ValidationB(obj),
      ValidationC(obj),
  }
  .Combine();

ValidationResult ValidationA(Person x) { ... }
ValidationResult ValidationB(Person x) { ... }
ValidationResult ValidationC(Person x) { ... }

Describe alternatives you’ve considered

In my current system I’ve added the following extension methods. If there are interest to make them part of the library (in case of no current native solution) I can submit a PR.

public static ValidationResult Combine(this ValidationResult validationResult, params ValidationResult[] failuresResult)
{
    return failuresResult.Append(validationResult).Combine();
}

public static ValidationResult Combine(this IEnumerable<ValidationResult> failuresResult)
{
    var errors = failuresResult.SelectMany(x => x.Errors);

    return new ValidationResult(errors);
}

Additional Context

No response

[JeremySkinner]

I’ve pushed out 11.7.1 with this fix

[JeremySkinner]

Added the new constructor in 1f9102d8a. This will go in the 11.7 release.

I’m not keen on including the extension methods in the library, I don’t feel they’re necessary, but you can continue to use them within your own project.