利用三個TextBox的BackColor(背景顏色)來模擬交通號誌( Red,Yellow,Green) !

動作方式先比較簡單一點吧! First -> Green Light ON last for 5seconds and then Yellow Light ON and last for one second and then RedLight ON and last for 5seconds !

How to do it? timer控制項是不可缺的! 因有三個燈號,所以要使用到三個Timer !

So!要先知道Timer控制項吧! setting上有 "Enable"參數-> True or Flase 再來還有計時時間(Timer的計時單位是 1mS [1毫秒],所以在 Interval參數中填入要計時的次數,例如填入1000 , 則 1mS*1000=1Second!則一秒鐘動作!

想一下吧 ! how to change the light color : Red, Yellow , Green !

Have fun with this homework!