实现一个Ftp搜索工具，主要介绍了属性页控件，对指定IP执行Ping命令查看主机存活状态，扫描主机端口，打开、添加、查询和关闭数据库，IP地址控件的使用等。-achieving a search tool, mainly on the properties page controls, the implementation of a designated IP Ping order to survive View host state, scanning host ports, open, ad