C#利用HttpWebRequest,Stream,HttpWebResponse,StreamReader获取post返回的数据

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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Net;using System.IO;namespace TestCon{    static class InfoGeter    {        //静态方法传递两个参数，Post_String是单纯的链接，Post_Data是post的参数用以请求        public static string Info_Geter_Post_Get(string Post_String,string Post_Data) {            try {            string s_Connection_String = Post_String;                //实例化一个HttpWebrequst对象            HttpWebRequest Info_Request = (HttpWebRequest)WebRequest.Create(s_Connection_String);                //设置Requst的模式            Info_Request.Method = "POST";                //设置Content-Type Http标头的值，该值为默认值            Info_Request.ContentType = "application/x-www-form-urlencoded";                                //预设响应等待时间            Info_Request.Timeout = 20000;                            //建立一个Stream对象来写入Requst请求的参数流内涵url和key值等            Stream Info_Stream = Info_Request.GetRequestStream();                //调用Write方法第一个参数是获取传递参数的值得类型，第二个是流起始位置，第三个参数指流的长度            Info_Stream.Write(Encoding.UTF8.GetBytes(Post_Data), 0, Encoding.UTF8.GetBytes(Post_Data).Length);                //实例化一个HttpWebResponse用GetResponse方法用以获取服务器返回的响应        HttpWebResponse Info_Response = (HttpWebResponse)Info_Request.GetResponse();                //实例化一个StreamReader对象来获取Response的GetResponseStream返回的响应的体            StreamReader Info_Reader = new StreamReader(Info_Response.GetResponseStream(), Encoding.UTF8);                         return Info_Reader.ReadToEnd()+"";            }            catch (System.Exception ex) {                Console.WriteLine(ex);                Console.ReadLine();                return "";            }        }    }}
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