Winform 程序以POST形式访问网站

本例介绍了Winform程序发送POST请求访问页面，主要使用到了HttpWebRequest和HttpWebResponse这两个对象。

程序主要代码如下：

using System.Net;
using System.IO;


//创建HttpWebRequest对象
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("http://192.168.0.1");//目标主机ip地址

//模拟POST的数据
            string postData = string.Empty;
            postData += "user=" + "test1";
            postData += "&password=" + "123";
            Encoding utf8=Encoding.UTF8;
            byte[] data = utf8.GetBytes(postData);

            //设置请求头信息
            string cookieheader = string.Empty;
            CookieContainer cookieCon = new CookieContainer();
            request.Method = "POST";
            //设置cookie，若没有可以不设置
            request.CookieContainer = cookieCon;
            request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = data.Length;
            Stream newStream = request.GetRequestStream();
            //把请求数据 写入请求流中
            newStream.Write(data, 0, data.Length);
            newStream.Close();

            
            //获得HttpWebResponse对象
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            Console.Write("Content length is {0}",  response.ContentLength + "\r\n");
            Console.Write("Content type is {0}",  response.ContentType + "\r\n");

            //获得响应流
            Stream receiveStream = response.GetResponseStream();
            StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8);
            //输入响应流信息
            Console.Write("Response stream received.\r\n");
            Console.Write(readStream.ReadToEnd() + "\r\n");
            
            response.Close();
            receiveStream.Close();
            readStream.Close();