阿里云客户端的实现(支持文件分块,断点续传,进度,速度,倒计时显示)

    public class AppBootstrapper : BootstrapperBase
    {
        private CompositionContainer container;

        public AppBootstrapper()
        {
            Initialize();
        }

        protected override void BuildUp(object instance)
        {
            this.container.SatisfyImportsOnce(instance);
        }

        /// 

        ///     By default, we are configured to use MEF
        /// 
        protected override void Configure()
        {
            foreach (var file in System.IO.Directory.GetFiles(System.IO.Directory.GetCurrentDirectory(), "FileTransfer.*.dll"))
            {
                AssemblySource.Instance.Add(Assembly.LoadFile(file));
            }

            var catalog =
                new AggregateCatalog(
                    AssemblySource.Instance.Select(x => new AssemblyCatalog(x)).OfType());

            this.cOntainer= new CompositionContainer(catalog);

            var batch = new CompositionBatch();

            batch.AddExportedValue(new WindowManager());
            batch.AddExportedValue(new EventAggregator());
            batch.AddExportedValue(this.container);
            batch.AddExportedValue(catalog);

            this.container.Compose(batch);
        }

        protected override IEnumerable<object> GetAllInstances(Type serviceType)
        {
            return this.container.GetExportedValues<object>(AttributedModelServices.GetContractName(serviceType));
        }

        protected override object GetInstance(Type serviceType, string key)
        {
            var cOntract= string.IsNullOrEmpty(key) ? AttributedModelServices.GetContractName(serviceType) : key;
            var exports = this.container.GetExportedValues<object>(contract);

            if (exports.Any())
            {
                return exports.First();
            }

            throw new Exception(string.Format("Could not locate any instances of contract {0}.", contract));
        }

        protected override void OnStartup(object sender, StartupEventArgs e)
        {
            //var startupTasks =
            //    GetAllInstances(typeof(StartupTask))
            //    .Cast()
            //    .Select(exportedDelegate => (StartupTask)exportedDelegate.CreateDelegate(typeof(StartupTask)));

            //startupTasks.Apply(s => s());
            DisplayRootViewFor();
            //base.OnStartup(sender, e);
        }
    }