利用VS2008做的简单WinForm程序， 实现简单的抽奖多程序。 20选5，不能重复。-Use VS2008 to do a simple WinForm procedures, to achieve a simple multi-draw procedure. 20 election of 5, can not be repeated.

抽奖号码滚动模拟程序,线程实现抽奖号码滚动界面，a simple simulation program-A simulation program to show numbers of lucky draw dynamically