Question

C# winform获取http文件头

我主要是想获得状态码，比如404等等，我现在的方法是
HttpWebResponse rs = (HttpWebResponse)HttpWebRequest.Create(URL).GetResponse();
result = rs.StatusCode.ToString();
但是这样的话实际上要把整个网页down下来之后才会得到result，要下载很多个包，而http头只是在第一个包出现，怎样才能提高效率？

Answer 1

HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri(URL));
req.Method = "HEAD"; //这是关键
req.Timeout = 1000;
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
res.StatusCode 就是了

Answer 2

HttpWebRequest req = (HttpWebRequest)WebRequest.CreateDefault(new Uri(URL));
req.Method = "HEAD"; //这是关键
req.Timeout = 1000;
HttpWebResponse res = (HttpWebResponse)req.GetResponse();
res.StatusCode 就是了