C#下载网页,即使网页404或者500错误
public static string GetWebPageAsString(string url) { HttpWebRequest httpWebRequest = (HttpWebRequest) WebRequest.Create(url); HttpWebResponse httpWebResponse = null; string xml = ""; try { httpWebResponse = (HttpWebResponse) httpWebRequest.GetResponse(); } catch (WebException exception) { if (exception.Status == WebExceptionStatus.ProtocolError) { //get the response object from the WebException httpWebResponse = exception.Response as HttpWebResponse; if (httpWebResponse == null){ return "<Error />";} } } Stream stream = httpWebResponse.GetResponseStream(); StreamReader streamReader = new StreamReader(stream, Encoding.ASCII); xml = streamReader.ReadToEnd(); //streamReader.Close(); if (httpWebResponse.StatusCode != System.Net.HttpStatusCode.OK) { throw new Exception(xml); } return xml; }