Business.PlayerBusiness.SetRequestCategoryAsync C# (CSharp) Метод

        public async Task SetRequestCategoryAsync(SearchSettings request) {
            if (request != null) {
                FilterSettings.Search = request.Search;
                if (!string.IsNullOrEmpty(request.RatingCategory) && request.RatingValue.HasValue) {
                    FilterSettings.RatingCategory = request.RatingCategory;
                    FilterSettings.RatingOperator = request.RatingOperator;
                    FilterSettings.RatingValue = request.RatingValue;
                }

                playMode = PlayerMode.RequestCategory;
            } else {
                FilterSettings.Search = null;
                FilterSettings.RatingCategory = null;
                FilterSettings.RatingValue = null;
                playMode = PlayerMode.Normal;
            }

            await SelectNextVideoAsync(0, false).ConfigureAwait(false);

            Application.Current.Dispatcher.Invoke(() => PlaylistChanged?.Invoke(this, new EventArgs()));
        }