C#利用HttpWebRequest,Stream,HttpWebResponse,StreamReader获取post返回的数据
usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Net;usingSystem.IO;namespaceTestCon{staticclassInfoGeter{//静态方法传递两个参数,Post_String是