async void send_Clicked(object sender, System.EventArgs e)
        {
            string st    = "";
            string folio = "";
            string note;

            if (this.ST.SelectedIndex >= 0)
            {
                st = viewModel.StItems[this.ST.SelectedIndex].st;
            }
            else
            {
                return;
            }
            if (this.Folio.SelectedIndex >= 0)
            {
                folio = viewModel.StItems[this.ST.SelectedIndex].folios[this.Folio.SelectedIndex].number;
            }
            else
            {
                return;
            }

            note = notes.Text;
            //System.Diagnostics.Debugger.Break();

            var result = await viewModel.SaveItems(st, folio, note);

            if (result)
            {
                await viewModel.DataStore.UpdateStateAsync(true, "#E0F8E0", viewModel.Item);

                Toast.MakeText(Forms.Context, "Foto enviada correctamente", ToastLength.Long).Show();
            }
            else
            {
                await viewModel.DataStore.UpdateStateAsync(false, "#FFFFFF", viewModel.Item);

                Toast.MakeText(Forms.Context, "Foto NO fue enviada", ToastLength.Long).Show();
            }
            var x = 0;

            App.GoToMainPage();
            //await Navigation.PushAsync(new ItemsPage(App.picService));
        }
        async Task SignIn()
        {
            try
            {
                IsBusy  = true;
                Message = "Signing In...";

                // Log the user in
                await TryLoginAsync();
            }
            finally
            {
                Message = string.Empty;
                IsBusy  = false;

                if (Settings.IsLoggedIn)
                {
                    App.GoToMainPage();
                }
            }
        }