C # Interface Design questions 2:panel placement problem

1. Question 1 is this, the user means to use a button to display a panel

That is, http://zhidao.baidu.com/question/1924974374730559427.html

2. So when I design the interface, all I can think about is to put all the panel in the same position, and then select which hidden display by pressing the key;; but the design of all the panel in the same position, do not overlap it? Online Download An example routines code, see he is as if all the panel is divided into open, do not know how to do??

C # Interface Design questions 2:panel placement problem