分别用HttpWebRequest和WebClient获取远程数据例子

string strUrl = this.strURL+"?UserName="+this.urlUserName+"&Passwd="+this.urlPasswd+"&textfield="+this.urlStockCode;
    //获取远程数据***********************************************************************************
    System.Net.NetworkCredential myCred=null;
    if(this.sProxyDomain=="")
     myCred=new System.Net.NetworkCredential(this.sProxyUser,this.sProxyPwd);
    else
     myCred=new System.Net.NetworkCredential(this.sProxyUser,this.sProxyPwd,this.sProxyDomain);

    System.Net.WebProxy proxyObject = new System.Net.WebProxy(");
    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(@strUrl);
    req.Proxy = proxyObject;
    HttpWebResponse HttpWResp = (HttpWebResponse)req.GetResponse();
    //*************************************获取远程数据******************************************************

    //    WebClient client = new WebClient();
    //    Byte[] responseData =
    //     client.DownloadData(@");
    //
    //    string stockXML = System.Text.Encoding.Default.GetString(responseData).Replace("\r\n","");
    //       DataSet ds = new DataSet();
    //       System.Xml.XmlTextReader oXmlReader = new XmlTextReader(new System.IO.StringReader(stockXML));
    //       ds.ReadXml(oXmlReader);

    DataSet ds = new DataSet();
    ds.ReadXml(HttpWResp.GetResponseStream());