已知一个网上图片地址(如http://sina/image.jpg)怎样通过.net把此图片变成自己的图片保存下来
已知一个网上图片地址(如http://sina/image.jpg)怎样通过.net把此图片变成自己的图片保存下来
存放在已有的文件夹里..个位高手请指点.求源码

[解决办法]
http://www.gdwg.net/article/sort014/sort063/sort071/info-1576.html
[解决办法]
string s = txtURL.Text.Trim();
System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(s);
System.Net.HttpWebResponse res = (System.Net.HttpWebResponse)req.GetResponse();
Image myImage = (Bitmap)Image.FromStream(res.GetResponseStream());

......
然后想怎样就怎样了
[解决办法]

C# code

 private  Stream GetStream(string strLink)    {        HttpWebRequest request = null;        try        {            request = (HttpWebRequest)WebRequest.Create(strLink);            request.UserAgent = "Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1;.NET CLR 2.0.50727)";            return request.GetResponse().GetResponseStream();        }        catch        {            request.Abort();            return null;        }    }    public bool SaveImage(string strLink,string strFolder,string strNewName,bool unique)    {        try        {            string strTmp = string.Empty;            readstream = GetStream(strLink);            if (readstream == null)            {                throw new Exception("获取图片错误");            }                  if (unique)            {                filestream = new FileStream(GetPath(strLink,strFolder,strNewName), FileMode.CreateNew, FileAccess.Write);            }            else            {                filestream = new FileStream(GetPath(strLink, strFolder, strNewName), FileMode.Create, FileAccess.Write);            }            do            {                length = readstream.Read(buffer, 0, buffer.Length);                if (length == 0)                {                    break;                }                filestream.Write(buffer, 0, length);            }            while (length > 0);            return true;        }        catch        {            return false;        }        finally        {            Close();        }    }//流都是stream类型我写ftp的时候用到的，，，具体的你自己改！close这个函数的命令就是关闭这些流！！