post请求

private void button2_Click(object sender, RoutedEventArgs e)

        {

            string url = "http://control.blog.sina.com.cn/xxxxxx"; //POST的地址

 

            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);

 

            request.Method = "POST";  //设置POST请求模式

 

            //设置参数，POST参数的格式是  参数1=值1&参数2=值2&参数3=值3

            string PostString = "blog_title=博客标题&";

            PostString += "blog_body=博客内容&";

            PostString += "blog_class=1";

            //将参数字符串转换成字节数组。

            byte[] PostData = System.Text.Encoding.UTF8.GetBytes(PostString);

 

 

            request.ContentType="application/x-www-form-urlencoded";  //设置ContntType ，这句很重要，否则无法传递参数

 

            request.ContentLength = PostData.Length;                  //设置请求内容大小，当然就设置成我们的参数字节数据大小。

 

 

            Stream requestStream = request.GetRequestStream();        //获取请求流

 

 

            requestStream.Write(PostData, 0, PostData.Length);        //将参数字节数组写入到请求流里

 

            requestStream.Close();                                    //关闭请求流

 

 

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();        //执行请求，获取响应对象

 

            Stream stream = response.GetResponseStream();                            //获取响应流

 

            StreamReader sr = new StreamReader(stream);                              //创建流读取对象

 

            string responseHTML = sr.ReadToEnd();                      //读取响应流

 

            txt_urllist.Text = responseHTML;                           //

            response.Close();                                          //关闭响应流

 

         }