摘要：这里谈到是三层编程在CLASS里调用的问题：开始使用VS 2005，习惯性的使用ConfigurationSettings类来读取应用程序配置文件的信息时，却被编译器提示说：警告 1 “System.Configuration.ConfigurationSettings.AppSettings”已过时:“This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings”于是转而想找到那个ConfigurationM 阅读全文