系统安全抛出：SecurityException

我开发了新闻网站，我试图从其他网站阅读RSS我用这个代码读取系统安全抛出：SecurityException

 private void GetRSS() 
      { 
    try 
    { 
     WebRequest rssReq =ebRequest.Create("http://www.aljazeera.net/AljazeeraRss/845674de-    

     e247-4149-b2c4-432d70b0076b/acefc2c1-1a68-4977-91c3-969026916497"); 

     //Create a Proxy 
     WebProxy px = new WebProxy("http://www.aljazeera.net/AljazeeraRss/845674de-e247-   

     4149-b2c4-432d70b0076b/acefc2c1-1a68-4977-91c3-969026916497", true); 
     // XPath="/rss/channel/item"; 
     //Assign the proxy to the WebRequest 
     rssReq.Proxy = px; 

     //Set the timeout in Seconds for the WebRequest 
     rssReq.Timeout = 5000; 
     try 
     { 
      //Get the WebResponse 
      WebResponse rep = rssReq.GetResponse(); 

      //Read the Response in a XMLTextReader 
      XmlTextReader xtr = new XmlTextReader(rep.GetResponseStream()); 

      //Create a new DataSet 
      DataSet ds = new DataSet(); 
      //Read the Response into the DataSet 
      ds.ReadXml(xtr); 
      //Bind the Results to the Repeater 
      Repeater1.DataSource = ds.Tables[3]; ; 
      Repeater1.DataBind(); 
     } 
     catch(Exception EX) 
     { 
      throw EX; 
     } 
     //ProcessRSSItem("http://www.bbc.co.uk/arabic/index.xml"); 

    } 
    catch (Exception EX) 
    { 
     throw EX; 
    } 
}

其工作本地主机上很不错，但是当我把它上传我的GoDaddy的帐户，它不读任何东西，我有这个错误

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

任何机构可以说明问题了我，给了我一个解决方案

问候

来源

2012-09-22 Muntaser Zalloum Exe

为什么要使用代理？尝试没有。 –