public ViewActivitiesPage()
        {
            InitializeComponent();

            ViewModel           = new ViewActivitiesViewModel();
            this.BindingContext = ViewModel;
        }
        public ActionResult ViewActivities()
        {
            IEnumerable <Activity>         activities = activitiesService.GetAll();
            List <ViewActivitiesViewModel> viewModels = new List <ViewActivitiesViewModel>();

            foreach (Activity activity in activities)
            {
                ViewActivitiesViewModel viewModel = new ViewActivitiesViewModel();
                viewModel.ActivityId = activity.ActivityId;
                viewModel.Duration   = activity.Duration;
                viewModel.Name       = activity.Name;
                viewModel.Price      = activity.Price;
                viewModels.Add(viewModel);
            }
            return(View(viewModels));
        }