基于Asp.net的ajax 跨域访问代理函数

///<summary>
///获取URL对应的页面
///</summary>
///<remarks>greenerycn2008-2-21</remarks>
///<paramname="url">网址</param>
///<returns>获取的页面字符串</returns>
publicstringGetHtmlPage(stringurl)
{
stringresult=string.Empty;
try
{
HttpWebRequestrequest=(HttpWebRequest)WebRequest.Create(url);
HttpWebResponseresponse=(HttpWebResponse)request.GetResponse();
StreamReaderreader=newStreamReader(response.GetResponseStream(),Encoding.UTF8);
result=reader.ReadToEnd();
}
catch(Exceptionex)
{
return"";
}
returnresult;
}

Page_load代码

protectedvoidPage_Load(objectsender,EventArgse)
{
Response.Write(GetHtmlPage("http://rss.sina.com.cn/news/china/focus15.xml"));
}