SistemaEscolar: PaginaListaEscuelas.xaml.cs

PaginaListaEscuelas.xaml.cs

using System;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using SistemaEscolar.Modelos;
using SistemaEscolar.Servicios;

namespace SistemaEscolar.Paginas
{
	[XamlCompilation(XamlCompilationOptions.Compile)]
	public partial class PaginaListaEscuelas : ContentPage
	{
		public PaginaListaEscuelas ()
		{
			InitializeComponent ();
		}

        protected async override void OnAppearing()
        {
            base.OnAppearing();

            Loading(true);
            var bd = new ServicioBaseDatos<Escuela>();
            lsvEscuelas.ItemsSource = await bd.ObtenerTabla();
            Loading(false);
        }

        void Loading(bool mostrar)
        {
            indicator.IsEnabled = mostrar;
            indicator.IsRunning = mostrar;
        }

        private async void lsvEscuelas_ItemSelected(object sender, SelectedItemChangedEventArgs e)
        {
            try
            {
                var dato = (Escuela)e.SelectedItem;
                await Navigation.PushAsync(new PaginaEscuela(dato));
                lsvEscuelas.SelectedItem = null;
            }
            catch (Exception ex)
            {
            }
        }

        public async void btnAgregar_Clicked(object sender, EventArgs e)
        {
            await Navigation.PushAsync(new PaginaEscuela(new Escuela()));
        }
    }
}