BLL.Site.ValidateSite C# (CSharp) Method

        public static Models.ValidationResult ValidateSite(Models.Site site, bool isNewSite)
        {
            var validationResult = new Models.ValidationResult();

            if (string.IsNullOrEmpty(site.Name))
            {
                validationResult.IsValid = false;
                validationResult.Message = "Site Name Is Not Valid";
                return validationResult;
            }

            if (isNewSite)
            {
                using (var uow = new DAL.UnitOfWork())
                {
                    if (uow.SiteRepository.Exists(h => h.Name == site.Name))
                    {
                        validationResult.IsValid = false;
                        validationResult.Message = "This Site Already Exists";
                        return validationResult;
                    }
                }
            }
            else
            {
                using (var uow = new DAL.UnitOfWork())
                {
                    var originalSite = uow.SiteRepository.GetById(site.Id);
                    if (originalSite.Name != site.Name)
                    {
                        if (uow.SiteRepository.Exists(h => h.Name == site.Name))
                        {
                            validationResult.IsValid = false;
                            validationResult.Message = "This Site Already Exists";
                            return validationResult;
                        }
                    }
                }
            }

            return validationResult;
        }