public void ShowNewOrVitual()
{
BaseClass a = new BaseClass();
BaseClass b = new ChildClass1();
BaseClass c = new ChildClass2();
ChildClass1 d = new ChildClass1();
ChildClass1 e = new ChildClass2();
ChildClass2 f = new ChildClass2();
string all = string.Format("{0}\n{1}\n{2}\n{3}\n{4}\n{5}\n", a.Show(), b.Show(), c.Show(), d.Show(), e.Show(), f.Show());
}
