在.net使用代理浏览网页

不需要使用用户名密码的代理服务器，匿名代理

1@ Import Namespace="System.Net"

1@ Import Namespace="System.IO"

 1<script language="C#" runat="server">   
 2void Page_Load(Object Src, EventArgs E) {   
 3myPage.Text = readHtmlPage("http://www.iwbuy.com");   
 4}   
 5  
 6private String readHtmlPage(string url)   
 7{   
 8String result;   
 9WebResponse objResponse;   
10WebProxy proxyObject = new WebProxy("http://urproxy:port/",true);   
11WebRequest objRequest = System.Net.HttpWebRequest.Create(url);   
12objRequest.Proxy = proxyObject;   
13  
14objResponse = objRequest.GetResponse();   
15using (StreamReader sr =   
16new StreamReader(objResponse.GetResponseStream()) )   
17{   
18result = sr.ReadToEnd();   
19// Close and clean up the StreamReader   
20sr.Close();   
21}   
22return result;   
23}   
24</script>

1<html>
2<body>
3<b>下面的内容框可以显示你要浏览的网页   
4<a href="http://www.iwbuy.com">www.iwbuy.com</a></b><hr/>
5<asp:literal id="myPage" runat="server"></asp:literal>
6</body>
7</html>

需使用用户名密码的代理服务器使用方法

1@ Import Namespace="System.Net"

1@ Import Namespace="System.IO"

 1<script language="C#" runat="server">   
 2void Page_Load(Object Src, EventArgs E) {   
 3myPage.Text = readHtmlPage("http://www.iwbuy.com");   
 4}   
 5  
 6private String readHtmlPage(string url)   
 7{   
 8String result;   
 9HttpWebRequest makeReq =(HttpWebRequest)WebRequest.Create("http://www.iwbuy.com/");   
10NetworkCredential giveCred = new NetworkCredential("username","password","domain");   
11CredentialCache putCache = new CredentialCache();   
12putCache.Add(new Uri("http://www.iwbuy.com/"), "Basic", myCred);   
13makeReq.Credentials = myCache;   
14WebResponse objResponse;   
15objResponse = objRequest.GetResponse();   
16using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()) )   
17{   
18result = sr.ReadToEnd();   
19// Close and clean up the StreamReader   
20sr.Close();   
21}   
22return result;   
23}   
24</script>

1<html>
2<body>
3<b>下面的内容框可以显示你要浏览的网页   
4<a href="http://www.iwbuy.com">www.iwbuy.com</a></b>
5<hr/>
6<asp:literal id="myPage" runat="server"></asp:literal>
7</body>
8</html>