winform 怎么获取窗体包含多少控件或窗体

C# code

ControlForm controlForm = new ControlForm();CheekKuangForm cheek1KuangForm = new CheekKuangForm();CheekKuangForm cheek2KuangForm = new CheekKuangForm();CheekKuangForm cheek3KuangForm = new CheekKuangForm();cheek1KuangForm.Show(controlForm);cheek2KuangForm.Show(controlForm);cheek3KuangForm.Show(controlForm);//有办法能获取controlForm现在包含了多少个窗体？？