SL动态加载外部xap包

 动态加载外部xap silverlight，通过映射和服务

    private void button1_Click(object sender, RoutedEventArgs e)
        {
            //1 •使用WebClient下载SLRandarHitTest.xap文件，进行异步读取。
            WebClient Appclient = new WebClient();
            Appclient.OpenReadAsync(new Uri("SLRandarHitTest.xap", UriKind.Relative));
            Appclient.OpenReadCompleted += new OpenReadCompletedEventHandler(Appclient_OpenReadCompleted);
            
        }

        void Appclient_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
            CreateXAPResource("SLRandar.dll","SLRandar.MainPage",e.Result);
        }
        /// <summary>
        /// 创建XAP包的反射实例并且加装到Canvas中
        /// </summary>
        /// <param name="dllStr">XAP包中的编译完成的运行代码的DLL文件</param>
        /// <param name="mainStr">需要实例化的启动页面</param>
        /// <param name="resultStream">使用WebClient下载到的数据流</param>
        private void CreateXAPResource(string dllStr,string mainStr,Stream resultStream)
        {
            //2 •
            //3 •获取其他包提供的资源流信息
            StreamResourceInfo streamResourceInfo = Application.GetResourceStream(new StreamResourceInfo(resultStream as Stream, null), new Uri(dllStr, UriKind.RelativeOrAbsolute));
            //4 •对Stream进行反射
            AssemblyPart assemblyPart = new AssemblyPart();
            Assembly assembly = assemblyPart.Load(streamResourceInfo.Stream);
            //5 •(创建实例
            var uc = (UserControl)assembly.CreateInstance(mainStr);
            lRoot.Children.Clear();
            lRoot.Children.Add(uc);
        }

具体项目看：http://down.51cto.com/data/684492

或者其他3个