我的 Shell / MainWindow的 ViewModel (通过设置)请求一个依赖项,该依赖项在启动时使用ConfigurationModuleCatalogAutoWireViewModel="True"
加载到模块中。
因为Shell在模块之前初始化,DI容器显然无法解析,所以应用程序崩溃。
public class MainWindowViewModel : BindableBase
{
// Cannot resolve IService
public MainWindowViewModel(IService service)
{
}
}
我已经尝试了这篇文章的两种方法,但都没有奏效。
我试过这样:
public interface IShellService
{
int NumberOfLoadedModules { get; }
void FlagModuleAsLoaded();
}
public class ShellService : IShellService
{
private readonly IModuleCatalog _moduleCatalog;
public ShellService(IModuleCatalog moduleCatalog)
{
_moduleCatalog = moduleCatalog;
}
public int NumberOfLoadedModules { get; private set; }
public void FlagModuleAsLoaded()
{
NumberOfLoadedModules++;
if (NumberOfLoadedModules != _moduleCatalog.Modules.Count())
return;
InitializeShell();
}
private static void InitializeShell()
{
Application.Current.MainWindow.Show();
}
}
internal class Bootstrapper : UnityBootstrapper
{
protected override DependencyObject CreateShell()
{
return null;
}
protected override void InitializeShell()
{
}
protected override void ConfigureContainer()
{
base.ConfigureContainer();
Container.RegisterInstance<IShellService>(new ShellService(ModuleCatalog), new ContainerControlledLifetimeManager());
}
protected override IModuleCatalog CreateModuleCatalog()
{
return new ConfigurationModuleCatalog();
}
}
用法
public abstract class ModuleBase : IModule
{
private readonly IShellService _shellService;
protected ModuleBase(IShellService shellService)
{
_shellService = shellService;
}
public void Initialize()
{
InitializeInternal();
FlagAsLoaded();
}
public abstract void InitializeInternal();
public void FlagAsLoaded()
{
_shellService.FlagModuleAsLoaded();
}
}
public class FooModule : ModuleBase
{
IUnityContainer _container;
public MusicUIModule(IUnityContainer container, IShellService shellService) : base(shellService)
{
_container = container;
}
public override void InitializeInternal()
{
_container.RegisterType<IService, Service>();
}
}
它开始计算模块,然后应用程序由于同样的原因而崩溃。
如果上述方法不适合我的目的,该问题如何解决?
谢谢!