新界面打开Winfrom页面

新界面打开Winfrom页面（互不影响，多线程打开，互补隶属）
Thread t1 = new Thread(delegate () { ThisBangmSHowfrm.ShowDialog(); });
t1.SetApartmentState(ApartmentState.STA);//点击操作Ui不会出错
t1.Start();
Close();