FluentValidation with Child Collections

something.cs

    class Program
    {
        static void Main(string[] args)
        {
            var command = new CreateCommand
            {
                Items = new List<CreateCommand.Item>()
                {
                    new CreateCommand.Item { Email = "test@test.com", NameFirst = "Test", NameLast = "Test"},
                    new CreateCommand.Item { Email = "testtest.com", NameFirst = "Test", NameLast = "Test"},
                    new CreateCommand.Item {}
                }
            };
                
            var validator = new CreateCommandValidator();
            var result =  validator.Validate(command);
        }


        public class CreateCommand
        {
            public List<Item> Items { get; set; }

            public class Item
            {
                public string Email { get; set; }
                public string NameFirst { get; set; }
                public string NameLast { get; set; }
            }
        }

        public class CreateCommandValidator : AbstractValidator<CreateCommand>
        {
            public CreateCommandValidator()
            {
                RuleFor(t => t.Items).NotEmpty();
                RuleFor(t => t.Items).SetCollectionValidator(new ItemValidator());
            }

            public class ItemValidator : AbstractValidator<CreateCommand.Item>
            {
                public ItemValidator()
                {
                    RuleFor(t => t.Email).NotNull().EmailAddress();
                }
            }
        }
    }

useful when validating dynamic forms

slick!! real nice.