mef

Found several good(related) questions here and here but all are nearly a year old. I will like to know in the current context of Prism development what is better or at least scenario where each is better. They are two approaches to solving some-what overlapping scenarios. Unity shines when you are developing a modular application where users will be using a subset of the modules and modules are self-contained. MEF shines when you have a lot of 3rd party developers creating plug-ins for your application - or several development teams publishing plugins. We started out with Prism for core

I want to export a generic class to a generic interface via MEF. My objects are: public interface IService<T> { } [Export(typeof(IService<T>))] // error!!!!!! public class Service<T> { } public class Client<T> { [Import] private IService<T> _service; } But when I try to export IService<T> , I get this error: Attribute argument cannot use type parameters Can anybody guide me to do this please? Try [Export(typeof(IService<>))] To get a generic type definition from the typeof operator, you omit type arguments. For types with more than one type parameter, use commas to indicate the "arity" of the

See below for an explanation of what is going on I have a really weird issue where the exception caught is null. The code uses MEF and tries hard to report composition errors. Using the debugger I can see the exception being thrown (an InvalidOperationException ) but when it is caught by the last catch block in the code below the ex variable is null. This is true both in the debugger and when executing the code normally. static T ResolveWithErrorHandling<T>() where T : class { try { IocContainer.Compose(Settings.Default.IocConfiguration); return IocContainer.Resolve<T>(); } catch

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: we are currently using MEF (Managed Extensibility Framework, http://mef.codeplex.com/ ) and it throws out exceptions, with limited information to proceed on. is there a way to debug MEF exceptions? My exception is like this: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.RuntimeModule.GetTypes() at System.Reflection.Assembly.GetTypes() at System

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: For my application as described in this question I want to use MEF to scan the available plugin assemblies and then store all the available import and export information in a serialized format (e.g. a set of strings or a memory stream). This is necessary because I need to transfer the import and export information over an AppDomain boundary without loading the plugin assemblies (essentially I want to delay load the plugins). I found some references, for instance this one or this one but none of the links gave me any idea how to: Extract all

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a scenario where I have to get an export from my CompositionContainer instance but I only have a Type to work with; I don't know the type at compile time, hence I can't retrieve the exported object in the normal generic way. Normally you would do this: _container.GetExportedObject (); But in my case, I have this: Type someType = ... ; _container.HowDoIGetTheExport(someType); Any ideas? 回答1: Found the answer: var export = _container.GetExports(someType, null, null).FirstOrDefault(); 回答2: Create the call dynamically using Type