mef

问题 I am trying to load some dll's into a MEF DirectoryCatalog within an ASP.NET MVC application: var catalog = new DirectoryCatalog(HttpRuntime.BinDirectory, "Toptable.Mobile.*.dll"); When I run the app through the Cassini web server (i.e. F5) everything runs fine however when hosted in IIS(7) I get the following exception: [SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken

问题 I am wanting to use mef with the Logging and Exception Blocks of Enterprise Library 5.0. What I am doing is I have a plugin defined that MEF is looking for in a directory. It then imports it for me. However I am using logging and exception handling in the plugin also and I would like to be able to insert the instance of the LogWriter and ExceptionWriter via mef. The example shows you how to do it with unity which won't work since I am using mef to get the plugin and instantiate it. thanks 回答1

问题 I am wanting to use mef with the Logging and Exception Blocks of Enterprise Library 5.0. What I am doing is I have a plugin defined that MEF is looking for in a directory. It then imports it for me. However I am using logging and exception handling in the plugin also and I would like to be able to insert the instance of the LogWriter and ExceptionWriter via mef. The example shows you how to do it with unity which won't work since I am using mef to get the plugin and instantiate it. thanks 回答1

问题 After much digging about I figured it's possible to use MEF for DI in MVC4, below SO link gives a couple of examples: How to integrate MEF with ASP.NET MVC 4 and ASP.NET Web API They work fine, but I'm wondering how to eliminate the need of explicitly "Import" and "Export" the obvious like your controllers in the MVC 4 app? There are some suggestions on the web, some top programming minds' blogs. But I had little success in replicating their success stories. Just to name a couple: http://mef

问题 I have written my application to be a class library that is launched by a win32 MFC application. Each of my views is a separate assembly that is located with the base class library that is located in a sub-directory of the hosted MFC application. My question is, how can I get MEF to resolve the dependencies of my exported classes using the assemblies from this sub-directory instead of the root directory? This is what I want: ParentFolder myapp.exe SubFolder myMvvmWindow.dll myMvvmSubWindow

问题 I understand that a MEF CompositionContainer creates and keeps instances of classes. I don't know under what circumstances a CompositionContainer has a class instance in its bowels. Can anybody list operations performed on the CompositionContainer or methods of the CompositionContainer class that cause the CompositionContainer to store an instance of a class within the CompositionContainer. Is it possible to view class instances held within a CompositionContainer in the debugger or any other

问题 I'm trying to play with the new syntax coloring capabilities of VS2010 based on Noah Richards' diff coloring sample. The goal is to create syntax coloring for SpecFlow (http://www.specflow.org). In my case, finding the syntax elements are fairly complex and not line-level. Therefore, when I implement the GetClassificationSpans I don't want to re-parse the entire file, but rather take the state of the beginning of the changed text and parsing the content from that point on. I thought that I

问题 I'm trying to play with the new syntax coloring capabilities of VS2010 based on Noah Richards' diff coloring sample. The goal is to create syntax coloring for SpecFlow (http://www.specflow.org). In my case, finding the syntax elements are fairly complex and not line-level. Therefore, when I implement the GetClassificationSpans I don't want to re-parse the entire file, but rather take the state of the beginning of the changed text and parsing the content from that point on. I thought that I

问题 I can't find it!? 回答1: ExportFactory<T> is not part of MEF for the desktop (yet - as of now, it's only released for Silverlight). It looks like it will be included in MEF 2. In the meantime, Glenn Block posted a version of the Composition.Initialization assembly ported to MEF for desktop development, and placed it on his SkyDrive. Alternatively, you can use the Preview 1 release of MEF2, which includes this. 来源： https://stackoverflow.com/questions/3762075/where-did-the-exportfactoryt-from

问题 I am tasked with modularizing a C# app that is a rewrite of a very large Delphi app (the DB has 249 tables!). Business constraints proscribe a complete redesign for .NET and better overall architecture, so we are basically just incrementally rewriting module for module of the Delphi app in C#. Until finished, the suite will comprise a mixture of pending rewrites, and C# app modules I want to integrate using MEF. The app concerns itself with Time-and-Attendance and Access-Control, and has