c# 的窗口程序。包括文件读写、网络通讯、数据库连接等功能。-c# windowns Application, contains file reading and writing, socket comm, database link

用的C语言socket实现的文件下载,服务器多线程,客户端有命令参数控制(Socket with the C language implementation of file downloads, multithreading server, the client has a command parameter control)