using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;

namespace Form1.Models
{
    public class CostValidator : ValidationAttribute
    {
        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            var pizza = (Pizza)validationContext.ObjectInstance;
            var cost = pizza.Cost;
            return cost < 11 ? new ValidationResult("cena musi być większa niż 10zł") : ValidationResult.Success;
        }
    }
}