C#抓取网页代码存在字符串里

C#抓取网页代码存在字符串里

public static string GetWebPageAsString(string url) {
    HttpWebRequest httpWebRequest =(HttpWebRequest)WebRequest.Create(url);
    // you may need these next two lines to prevent a .net bug
    // System.IO.IOException : Unable to read data from the transport connection: The connection was closed.
    // see http://support.microsoft.com/default.aspx?scid=kb;EN-US;915599
    httpWebRequest.KeepAlive = false; 
    httpWebRequest.ProtocolVersion = HttpVersion.Version10; 
            
    HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
    Stream stream = httpWebResponse.GetResponseStream();
    StreamReader streamReader = new StreamReader(stream, Encoding.ASCII);
    return streamReader.ReadToEnd();
}