async void Delete_Clicked(object sender, System.EventArgs e)
{
var contact = (sender as MenuItem).CommandParameter as Contact;
var response = await DisplayAlert("Confirm", "Are you sure you want to delete " + _service.GetContactDetails(contact.Id).FullName + "?", "Confirm", "Cancel");
if (response)
{
_service.RemoveContact(contact);
}
}
