using System;

using System.Linq;

​

namespace ConsoleTest

{

    class Program

    {

        static void Main(string[] args)

        {

            Pashkov p = new Pashkov();

​

            Console.WriteLine(Helpers.IsAllComplexBooleanValidationFalse(p));

​

            Console.ReadKey();

        }

    }

​

    public class Pashkov

    {

        [ComplexBooleanValidation]

        public bool IsSmart { get; set; }

​

        [ComplexBooleanValidation]

        public bool IsGoodLooking { get; set; }

​

        public bool IsYoung { get; set; }

    }

​

    public static class Helpers

    {

        public static bool IsAllComplexBooleanValidationFalse<T>(T obj) where T : class 

        {

            var props = obj.GetType().GetProperties().Where(

                prop => Attribute.IsDefined(prop, typeof(ComplexBooleanValidationAttribute))).Select(x=>x.GetValue(obj, null) as bool?);

​

            return props.Any(x=>x != null && !x.Value);

        }

    }

​

​

    [AttributeUsage(AttributeTargets.Property)]

    public class ComplexBooleanValidationAttribute : Attribute

    {

​

    }

}