使用C#向Sql Sever中存取网络图片和本地图片（二进制流的形式）

  string path = "../../A.jpg";
            FileStream fs = new FileStream(path, FileMode.Open);
            int streamLength = (int)fs.Length;  //获取文件流的长度。  
            byte[] image = new byte[streamLength];    //声明字节数组，用于保存图片文件  
            fs.Read(image, 0, streamLength);    //把图片文件转换成为字节数组保存  
            fs.Close();
            var p = new pictureUrl
            {
                pictureUrl1 = image
            };
            db.pictureUrl.InsertOnSubmit(p);//此处使用linq语句实现插入记录。
            db.SubmitChanges();

            string path = "https://img3.doubanio.com/mpic/s8896281.jpg";
            Uri url = new Uri(path);
            WebRequest webRequest = WebRequest.Create(url);
            WebResponse webResponse = webRequest.GetResponse();
            Bitmap myImage = new Bitmap(webResponse.GetResponseStream());

            MemoryStream ms = new MemoryStream();
            myImage.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
            var p = new pictureUrl
            {
                pictureUrl1 = ms.ToArray()
            };
            db.pictureUrl.InsertOnSubmit(p);
            db.SubmitChanges();

  var pictures = from picture in db.pictureUrl select picture;
            pictureUrl myPicture = pictures.First();
            MemoryStream mymemorystream = new MemoryStream(myPicture.pictureUrl1.ToArray());
            pictureBox1.Image = Image.FromStream(mymemorystream);