asp.net远程获取文件代码

public string GetHttpData(string url)
    {
        string sException = null;
        string sRslt = null;
        WebResponse oWebRps = null;
        WebRequest oWebRqst = WebRequest.Create(url);
        oWebRqst.Timeout = 50000;
        try
        {
            oWebRps = oWebRqst.GetResponse();
        }
        catch (WebException e)
        {
            sException = e.Message.ToString();
            Response.Write(sException);
        }
        catch (Exception e)
        {
            sException = e.ToString();
            Response.Write(sException);
        }
        finally
        {
            if (oWebRps != null)
            {
                StreamReader oStreamRd = new StreamReader(oWebRps.GetResponseStream(), Encoding.GetEncoding("UTF-8"));
                sRslt = oStreamRd.ReadToEnd();
                oStreamRd.Close();
                oWebRps.Close();
            }
        }
        return sRslt;
    }