1
我試過這個代碼與其他鏈接和它的作品。但在此link內容長度返回-1。WebResponse內容長度返回-1
Methot 1:
System.Net.WebRequest wr = System.Net.HttpWebRequest.Create(_link);
wr.Method = "HEAD";
using (System.Net.WebResponse resp = wr.GetResponse())
{
string ContentLength = resp.Headers.Get("Content-Length");
}
Methot 2:
var request = (HttpWebRequest)WebRequest.Create(_link);
request.Method = "HEAD";
using (var response = request.GetResponse())
{
long ContentLength = response.ContentLength;
}
我怎樣才能獲得的Content-Length?