public override View GetView(int position, View convertView, ViewGroup parent)
{
MasterAdapterHelper helper = null;
if (convertView == null) {
convertView = activity.LayoutInflater.Inflate (Android.Resource.Layout.SimpleListItem1, null);
helper = new MasterAdapterHelper ();
helper.Title = convertView.FindViewById<TextView> (Android.Resource.Id.Text1);
convertView.Tag = helper;
} else {
helper = convertView.Tag as MasterAdapterHelper;
}
helper.Title.Text = items [position].ToString ();
return convertView;
}