在.NET中使用httpWebRequest时"尝试了太多自动重定向"错误消息

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://example.com");
request.AllowAutoRedirect = false;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

if (response.StatusCode == HttpStatusCode.Redirect || response.StatusCode == HttpStatusCode.MovedPermanently)
{
    string location = response.Headers["Location"];
    HttpWebRequest newRequest = (HttpWebRequest)WebRequest.Create(location);
    HttpWebResponse newResponse = (HttpWebResponse)newRequest.GetResponse();
}