C# 通过WebRequest去访问一个图片的url连接怎么读取图片

Question

WebRequest webRequest = WebRequest.Create("http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg");
            HttpWebRequest request = webRequest as HttpWebRequest;
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            string encoding = response.ContentEncoding;
            StreamReader reader = new StreamReader(response.GetResponseStream());
            var xx = reader.ReadToEnd();
            byte[] picbyte = Encoding.Default.GetBytes(xx);

Answer 1

            string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";
            WebRequest request = (WebRequest)HttpWebRequest.Create(strUri);
            WebResponse response = request.GetResponse();            Stream stream = response.GetResponseStream();
            FileStream fileStream = File.Create("aa.jpg");
            byte []buffer=new byte[1024];
            int numReadByte = 0;
            while ((numReadByte=stream.Read(buffer, 0, 1024))!= 0)
            {
                fileStream.Write(buffer, 0,numReadByte);
            }
            fileStream.Close();
            stream.Close();

Answer 2

File.Create("aa.jpg") 这个File是怎么来的？

Answer 3

或者能直接得到Image的对象吗？

Answer 4

我是把图片放到本地，你可以这样构造Image对象：
            string strUri=@"http://nd.fjsen.com/images/attachement/jpg/site162/20120313/00248c4cdbd010c9321004.jpg";
            WebRequest request = (WebRequest)HttpWebRequest.Create(strUri);
            WebResponse response = request.GetResponse();             Stream stream = response.GetResponseStream();
            FileStream fileStream = File.Create("aa.jpg");
            Image image = Image.FromStream(stream);
            stream.Close();
            pictureBox1.Image = image;

Answer 5

得到了，呵呵 
  WebRequest webRequest = WebRequest.Create(share.Images);
            HttpWebRequest request = webRequest as HttpWebRequest;
            WebResponse response = request.GetResponse();
            Stream stream = response.GetResponseStream();
            Image image=Image.FromStream(stream);
弄一下午了，多谢你给的灵感

Answer 6

            Stream stream = response.GetResponseStream();
            Image image = Image.FromStream(stream);
            stream.Close();
            pictureBox1.Image = image;

Answer 7

WebClient myWebClient = new WebClient();
myWebClient.DownloadFile(new Uri("http://www.7soyo.com/Themes/Default/Images/recom_logo.jpg"), "D:\\temp.jpg");WebClient 是对httpwebrequest的一个封装,直接用两句话就下载下来了，不用那么复杂