在WinForm中发送HTTP请求的实现方法

下面小编就为大家带来一篇在WinForm中发送HTTP请求的实现方法。小编觉得挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧

如何在WinForm中请求发送HTTP

手工发送HTTP请求主要是调用 System.Net的HttpWebResponse方法

手工发送HTTP的GET请求：

				?

									string strURL = "http://localhost/Play/CH1/Service1.asmx/doSearch?keyword=";

									strURL +=this.textBox1.Text;

									System.Net.HttpWebRequest request;

									// 创建一个HTTP请求

									request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);

									//request.Method="get";

									System.Net.HttpWebResponse response;

									response = (System.Net.HttpWebResponse)request.GetResponse();

									System.IO.Stream s;

									s = response.GetResponseStream();

									XmlTextReader Reader = new XmlTextReader(s);

									Reader.MoveToContent();

									string strValue = Reader.ReadInnerXml();

									strValue = strValue.Replace("&lt;","<");

									strValue = strValue.Replace("&gt;",">");

									MessageBox.Show(strValue); 

									Reader.Close();

手工发送HTTP的POST请求

				?

									string strURL = "http://localhost/Play/CH1/Service1.asmx/doSearch";

									System.Net.HttpWebRequest request;

									request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);

									//Post请求方式

									request.Method="POST";

									// 内容类型

									request.ContentType="application/x-www-form-urlencoded";

									// 参数经过URL编码

									string paraUrlCoded = System.Web.HttpUtility.UrlEncode("keyword");

									paraUrlCoded += "=" + System.Web.HttpUtility.UrlEncode(this.textBox1.Text);

									byte[] payload;

									//将URL编码后的字符串转化为字节

									payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);

									//设置请求的 ContentLength 

									request.ContentLength = payload.Length;

									//获得请 求流

									Stream writer = request.GetRequestStream();

									//将请求参数写入流

									writer.Write(payload,0,payload.Length);

									// 关闭请求流

									writer.Close();

									System.Net.HttpWebResponse response;

									// 获得响应流

									response = (System.Net.HttpWebResponse)request.GetResponse();

									System.IO.Stream s;

									s = response.GetResponseStream();

									XmlTextReader Reader = new XmlTextReader(s);

									Reader.MoveToContent();

									string strValue = Reader.ReadInnerXml();

									strValue = strValue.Replace("&lt;","<");

									strValue = strValue.Replace("&gt;",">");

									MessageBox.Show(strValue); 

									Reader.Close();