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 
    }