public override ValidationResult Validate(object value,
        System.Globalization.CultureInfo cultureInfo)
        {
            BindingGroup bg = value as BindingGroup;
            if (bg == null) { return ValidationResult.ValidResult; }
            if (bg.Items.Count > 0)
            {
                Peoples tempValue = (value as BindingGroup).Items[0] as Peoples;
                try
                {
                    BaseRepository<Peoples> peoples = new BaseRepository<Peoples>();
                    var temp = (from peopl in peoples.items where tempValue.inn == peopl.inn select peopl).Count<Peoples>();
                    if (temp == 1)
                    {
                        peoples.SaveChages();
                        return ValidationResult.ValidResult;
                        
                    }

                    return new ValidationResult(false, "Найдено совпадение ИНН");
                }
                catch (Exception ex)
                {
                    return new ValidationResult(false, ex.Message);
                }
            }
            return ValidationResult.ValidResult;
        }
        public override ValidationResult Validate(object value,
        System.Globalization.CultureInfo cultureInfo)
        {
            BindingGroup bg = value as BindingGroup;
            if (bg == null) { return ValidationResult.ValidResult; }
            if (bg.Items.Count > 0)
            {
                period_in_ATO tempValue = (value as BindingGroup).Items[0] as period_in_ATO;
                try
                {
                    BaseRepository<period_in_ATO> periods = new BaseRepository<period_in_ATO>();

                    var temp = (from period in periods.items
                                where Comparator(period, tempValue)
                                select period).Count<period_in_ATO>();
                    if (temp == 1)
                    {
                        periods.SaveChages();
                        return ValidationResult.ValidResult;

                    }

                    return new ValidationResult(false, "Найдено совпадение периодов!!! Проверьте даты...");
                }
                catch (Exception ex)
                {
                    return new ValidationResult(false, ex.Message);
                }
            }
            return ValidationResult.ValidResult;
        }
        public override ValidationResult Validate(object value,
        System.Globalization.CultureInfo cultureInfo)
        {
            BindingGroup bg = value as BindingGroup;
            if (bg == null) { return ValidationResult.ValidResult; }
            if (bg.Items.Count > 0)
            {
                UBD_sertificate tempValue = (value as BindingGroup).Items[0] as UBD_sertificate;
                try
                {
                    BaseRepository<UBD_sertificate> sertificats = new BaseRepository<UBD_sertificate>();

                    var temp = (from sertif in sertificats.items
                                where sertif.id_people==tempValue.id_people && sertif.certificate_number==tempValue.certificate_number
                                select sertif).Count<UBD_sertificate>();
                    if (temp == 1)
                    {
                        sertificats.SaveChages();
                        return ValidationResult.ValidResult;

                    }

                    return new ValidationResult(false, "Запись о даном удостоверении уже существует!!!");
                }
                catch (Exception ex)
                {
                    return new ValidationResult(false, ex.Message);
                }
            }
            return ValidationResult.ValidResult;
        }