AcManager.Pages.Dialogs.AppKeyDialog.AppKeyDialogViewModel.GetErrors C# (CSharp) Метод

            public IEnumerable GetErrors(string propertyName) {
                return propertyName == nameof(Value) ? (string.IsNullOrWhiteSpace(Value) ? new[] { AppStrings.Common_RequiredValue } :
                    IsValueAcceptable ? null : new[] { InternetConnectionRequired ? AppStrings.AppKey_CannotCheck : AppStrings.AppKey_InvalidKey }) : null;
            }