Windows Phone 下载网络图片

来源：互联网发布：sybase数据库win7 编辑：程序博客网时间：2024/05/17 10:25

1. 使用WebClient, image1是Image控件

        private void Button_Click_1(object sender, RoutedEventArgs e)        {            WebClient wc = new WebClient();            wc.OpenReadAsync(new Uri("http://1.su.bdimg.com/icon/weather/a0.jpg"));            wc.OpenReadCompleted += wc_OpenReadCompleted;        }        void wc_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)        {            BitmapImage bmi = new BitmapImage();            bmi.SetSource(e.Result);            image1.Source = bmi;        }

2.HttpWebRequest

        private void Button_Click_2(object sender, RoutedEventArgs e)        {            string url = "http://1.su.bdimg.com/icon/weather/a0.jpg";            WebRequest reqest = HttpWebRequest.Create(url); //创建WebRequest类            IAsyncResult resutl = reqest.BeginGetResponse(ResponseCallback, reqest);//返回异步操作的状态        }        private void ResponseCallback(IAsyncResult result)        {            HttpWebRequest request = (HttpWebRequest)result.AsyncState; //获取异步操作返回的的信息            WebResponse response = request.EndGetResponse(result);  //结束对 Internet 资源的异步请求                        //委托UI线程更新UI            Dispatcher.BeginInvoke(() =>             {                using (Stream stream = response.GetResponseStream())                {                    BitmapImage bitmap = new BitmapImage();                                bitmap.SetSource(stream);                    image1.Source = bitmap;                }            });                    }

源码：http://download.csdn.net/detail/renyg25/5377189