ASP.NET下载网站上的地图图片（精）

页面中引入：
using System.Net;
using System.IO;
下面两个方法，结果都是一样，都可以下载网站上的图片；
private void Sava1()
{
string url = "http://192.234.86.15/Maplink//05/000/000/013/000/000/006.png";
WebRequest wreq = WebRequest.Create(url);
HttpWebResponse wresp = (HttpWebResponse)wreq.GetResponse();
Stream s = wresp.GetResponseStream();
System.Drawing.Image img;
img = System.Drawing.Image.fromStream(s);
img.Save("E:\\000.png", System.Drawing.Imaging.ImageFormat.Png);
MemoryStream ms = new MemoryStream();
img.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
img.Dispose();
Response.ClearContent();
Response.ContentType = "image/png";
Response.BinaryWrite(ms.ToArray());
}
private void Sava2()
{
string url2 = "http://219.234.86.15/Maplink//03/000/000/004/000/000/002.png";
WebClient my = new WebClient();
byte[] mybyte;
mybyte = my.DownloadData(url2);
MemoryStream ms = new MemoryStream(mybyte);
System.Drawing.Image img;
img = System.Drawing.Image.fromStream(ms);
img.Save("E:\\001.png", System.Drawing.Imaging.ImageFormat.Png); //保存
//下面直接输出
Response.ClearContent();
Response.ContentType = "image/gif";
Response.BinaryWrite(mybyte);
//如果是真实的图片地址直接用
my.DownloadFile(url2, "E:\\001.png"); //保存
}