How to validate collection items using RuleForEach

I have been using (successfully) the following validation:

RuleFor(x => x.Items)
.SetCollectionValidator(new ItemValidator())
.Must(coll => coll.Sum(item => item.Percentage) == 100)
.When(x => x.Items != null);


As the above SetCollectionValidator is (will be) deprecated, I changed it to:

SetCollectionValidator

RuleForEach(x => x.Items)
.SetValidator(new ItemValidator())
.Must(coll => coll.Sum(item => item.Percentage) == 100)
.When(x => x.Items != null);


However, Sum is not recognized anymore.

Sum

How can I fix this?

1 Answer
1

You can use two separate rules. One of them is validate item, and other one is for validation of collection.

RuleForEach(x => x.Items)
.SetValidator(new ItemValidator());

RuleFor(x => x.Items)
.Must(coll => coll.Sum(item => item.Percentage) == 100)
.When(x => x.Items != null);


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