async void ListViewItemLongClick(object sender, AdapterView.ItemLongClickEventArgs e)
{
MessageDialogs.SendConfirmation("Are you sure you want to delete this contact?", "Confirmation", async(delete) =>
{
if (!delete)
{
return;
}
await viewModel.DeleteContact(viewModel.Contacts[e.Position]);
Activity.RunOnUiThread(() => { ((BaseAdapter)listView.Adapter).NotifyDataSetChanged(); });
});
}
