virtual public void Changed_State(object sender, EventArgs e)
{
AM <T> s = null;
AM <T> ee = null;
if (sender is AM <T> )
{
s = sender as AM <T>;
}
//else s =new AM<T>(sender);
if (e is AM <T> )
{
ee = e as AM <T>;
}
//else ee = new AM<T>(e);
if (IsNull(Act) == false)
{
Act.Get()(s, ee);
}
}