用C#实现的Http协议封装，可以使用UrlEncoded、Multi-Part form vars、XML这3种方式来POST和Get文本和文件，支持Proxy,支持各种编码，是良好的学习HTTP编程的例程-With C# Realize the Http protocol package, you can use UrlEncoded, Multi-Part form vars, XML that three kinds of ways to POST and Get text and do