void SetupEvents()
{
var abvTap = new UITapGestureRecognizer(() => {
lblAbv.Hidden = true;
tbxAbv.Hidden = false;
tbxAbv.KeyboardType = UIKeyboardType.DecimalPad;
tbxAbv.BecomeFirstResponder();
EditingAbv();
});
lblAbv.UserInteractionEnabled = true;
lblAbv.AddGestureRecognizer(abvTap);
}