异步上传文件,有进度条,服务器端使用webservice接收.-Asynchronous upload files, there is progress bar, the server-side using the webservice to receive.

multi clients asynchronous connection to a server using VB.net, founded on code project

线程同步与异步套接字编程的源代码，为一个压缩包，含客户端和服务器端代码-Thread synchronization with asynchronous socket programming source code as a compressed package, including client and server-side code