可以抽取系统图标用于文件在listview中显示前的图标,加上美丽的工具栏,无法抗拒的魅力-can Extraction System icon for the document shown in listview before the icon, nice toolbar, irresistible charm

一个简单的抽奖程序，从1至500个数中随机抽取一个，显示在窗口中。适合小型抽奖活动。-A simple windows form application that could perform luck draw.