2012-09-27 64 views
1

我使用棱镜4.1与mef开发前台应用程序,我遇到了问题。有时,在模块加载过程的应用程序失败,异常Silverlight Prism无法解析加载模块,但并不总是

无法加载文件或程序集“Sl.Common.Model,版本= 1.0.0.0,文化=中立, 公钥=空”或它的一个依赖。找不到指定的文件。

模块具有依赖关系(AuditModule和LoadersModule依赖于CommonModule)。

<Modularity:ModuleCatalog xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
          xmlns:sys="clr-namespace:System;assembly=mscorlib" 
          xmlns:Modularity="clr-namespace:Microsoft.Practices.Prism.Modularity;assembly=Microsoft.Practices.Prism"> 

<!-- language: lang-xml -->  
    <Modularity:ModuleInfo Ref="Sl.Common.Model.xap" InitializationMode="WhenAvailable" ModuleName="CommonModule"/> 
    <Modularity:ModuleInfo Ref="Sl.Loaders.xap" ModuleName="LoadersModule"> 
     <Modularity:ModuleInfo.DependsOn> 
      <sys:String>CommonModule</sys:String> 
     </Modularity:ModuleInfo.DependsOn> 
    </Modularity:ModuleInfo> 
    <Modularity:ModuleInfo Ref="Sl.Audit.xap" ModuleName="AuditModule"> 
     <Modularity:ModuleInfo.DependsOn> 
      <sys:String>CommonModule</sys:String> 
     </Modularity:ModuleInfo.DependsOn> 
    </Modularity:ModuleInfo> 

</Modularity:ModuleCatalog> 

应用程序有时会启动不错,但我有一个问题,当AuditModule或LoadersModule不能因为“CommonModule”上面descibed例外来解决。

public class Bootstrapper : MefBootstrapper 
{ 
    private const string ModuleCatalogUri = "/ModerationSlUserInteface;component/ModulesCatalog.xaml"; 

    protected override void ConfigureAggregateCatalog() 
    { 
     base.ConfigureAggregateCatalog(); 
     this.AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(Bootstrapper).Assembly)); 
     this.AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(StackPanelRegionAdapter).Assembly)); 
    } 

    protected override IModuleCatalog CreateModuleCatalog() 
    { 
     var catalog = Microsoft.Practices.Prism.Modularity.ModuleCatalog.CreateFromXaml(new Uri(ModuleCatalogUri, UriKind.Relative)); 
     return catalog; 
    } 

    protected override DependencyObject CreateShell() 
    { 
     return this.Container.GetExportedValue<Shell>(); 
    } 

    protected override void InitializeShell() 
    { 

     //base.InitializeShell(); 
     Application.Current.RootVisual = (UIElement)this.Shell; 
    } 

    protected override RegionAdapterMappings ConfigureRegionAdapterMappings() 
    { 
     RegionAdapterMappings mappings = base.ConfigureRegionAdapterMappings(); 
     var stackPanelAdapterInstance = ServiceLocator.Current.GetInstance<StackPanelRegionAdapter>(); 
     mappings.RegisterMapping(typeof(StackPanel), stackPanelAdapterInstance); 
     return mappings; 
    } 
} 

的代码可以从here

P.S.采取在Shell.xaml.cs中,当我打到 if if(e.ModuleInfo.ModuleName == LoadersModuleName)

如果第一个Module是CommonModule,那么应用程序就会正常启动。否则它会例外。

[Export] 
public partial class Shell : UserControl, IPartImportsSatisfiedNotification 
{ 
    private const string LoadersModuleName = "LoadersModule"; 
    private static Uri LoadersViewUri = new Uri("/LoadersView", UriKind.Relative); 

    public Shell() 
    { 
     this.InitializeComponent(); 
    } 

    [Import(AllowRecomposition = false)] 
    public IModuleManager ModuleManager; 

    [Import(AllowRecomposition = false)] 
    public IRegionManager RegionManager; 

    public void OnImportsSatisfied() 
    { 
     this.ModuleManager.LoadModuleCompleted += (s, e) => 
     { 
      if (e.ModuleInfo.ModuleName == LoadersModuleName) 
      { 
       this.RegionManager.RequestNavigate(RegionNames.MainRegion, LoadersViewUri); 
      } 
     }; 
    } 
} 

回答

1

我们发现您也必须在模块中添加任何引用到入口点项目中。

所以,如果你在AuditModule参考Microsoft.Practices.Prism.UnityExtensions(例如),那么你需要一个参考MainProject添加入MainProject以及即使它没有直接引用任何代码。

+0

谢谢。我已经使它在启动应用程序中引用CommonModule。但之前它怎么能工作? – Grigory