public static void Main()
{
Ancestors.Show(new Manager().GetType());
Manager m = new Manager();
Employee e = new Employee();
Type t1 = typeof(Manager);
Type t2 = typeof(Employee);
RuntimeTypeHandle rtth = t1.TypeHandle;
Type tt = Type.GetTypeFromHandle(rtth);
Console.WriteLine(t1.IsSubclassOf(t2));
Console.WriteLine(t2.IsSubclassOf(t1));
Console.WriteLine(t2.IsAssignableFrom(t1));
}