在C中Tor的麻煩＃

我環顧了各地的鏈接。我找不到任何。請幫幫我。這裏是我的代碼。（VS2010）在C中Tor的麻煩＃

 HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://whatismyipaddress.com/"); 
     request.Proxy = new WebProxy("127.0.0.1:9150"); 
     request.KeepAlive = false; 

     try 
     { 
      using (var response = request.GetResponse()) 
      { 
       using (var reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("utf-8"))) 
       { 
        string temp = reader.ReadToEnd(); 
        MessageBox.Show(temp); 
       } 
      } 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.Message); 
     }

這使錯誤信息是這樣的。（501）未執行。

And Tor說。