说明：  Power Builder编程经验谈 为了方便大家阅读，特将这些文章整理出来，制作成了电子图书，免费供大家下载，奉献给所有热爱PowerBuilder和将要学习PowerBuilder的朋友。
(Power Builder programming experience to talk about for the convenience of people reading, special will be sorted out these articles, making electronic books became a free for all to download, dedicated to all those who love to learn PowerBuilder and PowerBuilder to be friends.)