Inheritance: BaseDto
        public bool UpdateCounty(CountyDto dto)
        {
            var county = this.db.Counties.FirstOrDefault(x => x.DeletedOn.HasValue == false && x.Id == dto.Id);
            if (county != null)
            {
                county.UpdatedOn = DateTime.Now;
                county.UpdatedBy = dto.UpdatedBy;
                county.Comment = dto.Comment;

                county.Name = dto.Name;
                county.CityId = dto.City.Id;

                this.db.SaveChanges();
                return true;
            }
            return false;
        }
        public bool AddCounty(CountyDto dto)
        {
            if (!this.db.Counties.Any(x => x.DeletedOn.HasValue == false && x.Name.Trim() == dto.Name.Trim()))
            {
                this.db.Counties.Add(new County
                {
                    CreatedOn = DateTime.Now,
                    UpdatedOn=DateTime.Now,
                    UpdatedBy = dto.UpdatedBy,
                    Comment = dto.Comment,

                    Name = dto.Name,
                    CityId = dto.City.Id
                });

                this.db.SaveChanges();
                return true;
            }
            return false;
        }