image控件如何显示数据库中的图片 asp.net

//byte[] buffByle = (Byte[])prtb.Rows[0]["sPicture"];//把数据库中图片的二进制数据转换一个byte数组
            //int filelength = buffByle.Length;//获得数组的长度
            ////创建在服务器上对应虚拟路径的物理路径
            ////string myUrl = HttpContext.Current.Server.MapPath(this.Request.ApplicationPath) + "TempDownLoad";
            //System.IO.FileInfo file = new System.IO.FileInfo(Server.MapPath("TempDownLoad"));
            //if (file.Exists)
            //{
            //    file.Delete();

            //}

            //string myUrl = Server.MapPath("TempDownLoad");

            //// 创建文件流
            //FileStream fs = new FileStream(myUrl, FileMode.OpenOrCreate);
            //BinaryWriter w = new BinaryWriter(fs);//以二进制的形式将基元内写入流
            //w.BaseStream.Write(buffByle, 0, filelength);//把数据库中的图片二进制添加到BinaryWriter
            //w.Flush();
            //w.Close();
            //Image1.ImageUrl = "~/TempDownLoad";