文件下载系统设计

Document Downloading System Design

该文通过一个实例向大家介绍用VisualC#进行Internet通讯编程的一些基本知识。我们知道.Net类包含了请求/响应层、应用协议层、传输层等层次。在本程序中,我们运用了位于请求/响应层的WebRequest类以及WebClient类等来实现高抽象程度的Internet通讯服务。本程序的功能是完成网络文件的下载。

This text passeses a solid example toward everyone to introduce to use Visual C#carry on some basic knowledge of the Internet communication plait distance.We know.Net included a claim/respond to a layer,apply an agreement layer and deliver a layer of etc.layer.In this procedure,we made use of to locate a claim/respond to WebRequest and WebClient etc.of layer to carry out the Internet communication of high and abstract degree a service.The function of this procedure is the download which completes a network document.