该程序运用了当文档对话框，实现了客户端与服务器的链接，但是在运用时还需要能够成功连接服务器，因此要先架好FTP服务器。(The program used the document dialog box to achieve the link between the client and the server, but when it was applied, it also needed to successfully connect to the server, so we had to first install the FTP server.)