1 　　　　　　　　　　Uri myUri = new Uri(imgUrl);
 2                 WebRequest webRequest = WebRequest.Create(myUri);
 3                 WebResponse webResponse = webRequest.GetResponse();
 4                 Bitmap myImage = new Bitmap(webResponse.GetResponseStream());
 5 
 6                 MemoryStream ms = new MemoryStream();
 7 
 8 　　　　　　　　　myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Gif)
 9                 Response.ClearContent();
10  　　　　　　　　 Response.ContentType = "image/Gif";
11                 Response.BinaryWrite(ms.ToArray());