在加载模块后再增加模块

在加载模块后再增加模块，转载文章HERE

The following sequence diagram shows us that the InitializeModules() method is the last process run http://global-webnet.net/UML/prism.htm

Examining the baseclass code we find that the following is what actually loads the modules; suggesting that it is safe to run again because of  the statement in bold:

       private void LoadModuleTypes(IEnumerable<ModuleInfo> moduleInfos)
       {
            if (moduleInfos == null)
            {
                return;
            }

            foreach (ModuleInfo moduleInfo in moduleInfos)
            {
                if (moduleInfo.State == ModuleState.NotStarted)
                {
                    if (this.ModuleNeedsRetrieval(moduleInfo))
                    {
                        this.BeginRetrievingModule(moduleInfo);
                    }
                    else
                    {
                        moduleInfo.State = ModuleState.ReadyForInitialization;
                    }
                }
            }
            this.LoadModulesThatAreReadyForLoad();
        }


I did a quick Proof of Concept with the StockTraderRI application to see if it was as easy as what was suggested to add a module after the BootStrapper process;  I added the line in bold below to the App() class

namespace StockTraderRI
{
    public partial class App : Application
    {
        public App()
        {
            this.Startup += this.Application_Startup;
            this.Exit += this.Application_Exit;
            this.UnhandledException += this.Application_UnhandledException;

            InitializeComponent();
        }

        private void Application_Startup(object sender, StartupEventArgs e)
        {
            //this.RootVisual = new Shell();
            var bootstrapper = new StockTraderRIBootstrapper();
            bootstrapper.Run();

            // Watch module will not load without this line
            bootstrapper.PostCatalogProcessing(); 
        }

I then updated the StockTraderRIBootstrapper as follows. 

namespace StockTraderRI
{
    public partial class StockTraderRIBootstrapper : UnityBootstrapper
    {
        protected override IModuleCatalog GetModuleCatalog()
        {
            var catalog = new ModuleCatalog();
            catalog.AddModule(typeof(MarketModule))
                .AddModule(typeof(PositionModule), "MarketModule");
                //.AddModule(typeof(WatchModule), "MarketModule");   <= remarked out
                //.AddModule(typeof(NewsModule));                                <= remarked out

            return catalog;
        }

        public void PostCatalogProcessing()
        {
            ModuleCatalog catalog = (ModuleCatalog)Container.Resolve<IModuleCatalog>();
           
            catalog.AddModule(typeof(WatchModule), "MarketModule");
            catalog.AddModule(typeof(NewsModule));
            InitializeModules();
        }