// Remote connection using jsonplaceholder.typicode.com/posts;
async void OnToggled_R(object sender, EventArgs e)
{
await itemListViewModel.UpdatePostsAsync();
postsListView.ItemsSource = await itemListViewModel.Fetchpost();
Additem.IsEnabled = false;
}
protected override async void OnAppearing()
{
base.OnAppearing();
await itemListViewModel.UpdatePostsAsync();
}