string url = "https://"; HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url); req.ServicePoint.Expect100Continue = false; req.Method = "GET"; req.KeepAlive = true; req.ContentType = "image/*"; HttpWebResponse rsp = (HttpWebResponse)req.GetResponse(); System.IO.Stream stream = null; try { stream = rsp.GetResponseStream(); System.Drawing.Image.FromStream(stream); } finally { if (stream != null) stream.Close(); if (rsp != null) rsp.Close(); }
使用HttpWebRequest下载,System.Drawing.Image.FromStream()生成图片。