Stop Fluent Validation on first failure

Question

i\'m defining a validation for my Request objects. I would like the validator to stop on the very first failure, not only the one on the same chain. In the example below, if my

Answer 1

You can use DependentRules.

RuleFor(object => object.String)
    .NotNull()
    .DependentRules(() =>
    {
        RuleFor(object => object.String)
            .NotEmpty()
            .Matches("^[A-Z]{3}$");
    });

Then you dont duplicate validation code.

You can even add an extension method for no duplicating the RuleFor.

    public static IRuleBuilderOptions DependentRules(
        this IRuleBuilderOptions currentRule, 
        Action> action)
    {
        return currentRule.DependentRules(() => action(currentRule));
    }

So the definitve code:

RuleFor(object => object.String)
    .NotNull()
    .DependentRules(currentRule =>
    {
        currentRule
            .NotEmpty()
            .Matches("^[A-Z]{3}$");
    });