/// <summary>
        /// Pushes the LoadingFeedsController if categories are selected.
        /// </summary>
        private void ViewButtonClicked(object sender, EventArgs e)
        {
            if (_selectedCategories.Count < 1)
            {
                ModalDialog.Alert("No categories selected", "Please select some categories first.");
                return;
            }

            _viewFeedsController = new ViewFeedsController();
            NavigationController.PushViewController(_viewFeedsController, true);
        }
        /// <summary>
        /// Pushes the LoadingFeedsController if categories are selected.
        /// </summary>
        private void ViewButtonClicked(object sender, EventArgs e)
        {
            if (_selectedCategories.Count < 1)
            {
                ModalDialog.Alert("No categories selected","Please select some categories first.");
                return;
            }

            _viewFeedsController = new ViewFeedsController();
            NavigationController.PushViewController(_viewFeedsController, true);
        }