It allows application developers to discover and use extensions with no configuration required. Langjährige Erfahrungen bei der Entwicklung von .NET-Anwendungen und dem Betrieb … This topic covered the basic concepts of MEF. What is important to note is why they created one themselves, instead of using Unity or alike. Exporting under a contract based on typeof(MySimpleCalculator) would produce a mismatch, and the import would not be filled; the contract needs to match exactly. The .NET Framework 4.5 adds substantial improvements to other functional areas such as ASP.NET, Managed Extensibility Framework, Windows Communication Foundation, Windows Workflow Foundation, and Windows Identity Foundation. / April 12, 2010, https://github.com/microsoftarchive/mef/blob/master/LICENSE, Building Composable Apps in .NET 4 with the Managed Extensibility Framework, https://en.wikipedia.org/w/index.php?title=Managed_Extensibility_Framework&oldid=947799360, Wikipedia articles needing clarification from November 2013, Creative Commons Attribution-ShareAlike License. The Managed Extensibility Framework (MEF) is a new extensibility model in the .NET framework that provides a simple declarative model for application developers and extenders to … MEF will automatically assume the contract to be based on the type of the import unless you specify it explicitly.). Managed Extensibility Framework (MEF).NET Framework 4.0 (.NET 4.0).NET Framework 4.5 (.NET 4.5) Schulung Managed Extensibility Framework. Roughly speaking, MEF's core consists of a catalog and a CompositionContainer. It allows application developers to discover and … MEF provides catalogs to discover parts from a provided type, an assembly, or a directory. For those who don’t know, the Managed Extensibility Framework (MEF) is alive and well, and has been ported to .NET Core as System.Composition (source here). What is important to note is why they created one … I have an application that uses MEF to dynamically load assemblies. How to configure MEF (Managed Extensibility Framework) to only load signed assemblies. A catalog provides a collection of parts from a particular source. Managed Extensibility Framework. Viewed 895 times 4. MEF allows tagging extensions with additional metadata which aims to facilitate rich querying and filtering. The purpose of SimpleCalculator is to demonstrate the concepts and syntax of MEF, rather than to necessarily provide a realistic scenario for its use. An export is a value that a part provides to other parts in the container, and an import is a requirement that a part expresses to the container, to be filled from the available exports. What is the Managed Extensibility Framework (A.k.a. It also lets extension developers easily encapsulate code and avoid fragile hard dependencies. For more information and code examples, see Managed Extensibility Framework. MEF can be used for third-party plugin extensibility, or it can bring the benefits of a loosely-coupled plugin-like architecture to regular applications. The focus of MAF is slightly higher-level than MEF, concentrating on extension isolation and assembly loading and unloading, while MEF's focus is on discoverability, extensibility, and portability. Das Managed Extensibility Framework (MEF) kann durch verschiedene Möglichkeiten erweitert werden. 2. The Export attribute can decorate a class, field, property, or method, while the Importattribute can decorate a field, property, or constructor parameter. Category: Managed Extensibility Framework (english) MEF Part 3 – Life cycle management and monitoring. .net documentation: Managed Extensibility Framework. message. (In this case, you could leave out the typeof(ICalculator). With these parts in place, all that remains is the calculator logic itself. Managed Extensibility Framework, is a widely used framework which targets not only Dependency Injections in .NET applications but main concentration of this framework is about writing fully extensible software. Managed Extensibility Framework (MEF) In der vergangenen Woche ist die erste CTP des MEF-Frameworks erschienen. Application developers can easily create new catalogs to discover parts from other sources, such as a Web service. Remarks. Managed Extensibility Framework (MEF) implementation used by Visual Studio Topics. Open Module1.vb or Program.cs and add Imports or using statements for System.ComponentModel.Composition and System.ComponentModel.Composition.Hosting. Add the following class to the module or SimpleCalculator namespace: Compile and run the project. Version 2 of Managed Extensibility Framework (MEF), a framework for extending .NET applications, is currently in Preview mode, and the final release will be part of .NET Framework … Beratung Managed Extensibility Framework. IOC Containers and MAF). It aims to allow .NET application developers to discover and use extensions with no configuration required. Parts and the composition container are the basic building blocks of a MEF application. A ComposablePart returned by a catalog will likely be an extension to the application. Ein großer Vorteil von MEF gegenüber anderen Technologien, die das Control Inversion-of-Control-Verfahren unterstützen, ist die Unterstützung von Abhängigkeiten, die zur Entwurfszeit nicht bekannt sind. With an import, the component specifies a need for a particular value or object, and with an export it specifies the availability of a value. MEF can be used for third-party plugin extensibility, or it can bring the benefits of a loosely-coupled plugin-like architecture to regular applications. The .NET Framework 4.5 delivers better performance, reliability, and security. In the attributed programming model, imports and exports are declared by decorating classes or members with the Import and Export attributes. It also lets extension developers easily encapsulate code and avoid fragile hard dependencies. MEF offers discovery and composition capabilities that you … This means that assuring that the components are correct becomes a maintenance issue, particularly if it is the end user and not the developer who is expected to do the updating. An extensible application written by using MEF declares an import that can be filled by extension components, and may also declare exports in order to expose application services to extensions. The class diagram is below. It also lets extension developers easily encapsulate code and avoid fragile hard dependencies. The simplest way to see what MEF can do is to build a simple MEF application. It also lets extension developers easily encapsulate code and avoid fragile hard dependencies. Alle Beispiele erfordern einen Verweis auf die System.ComponentModel.Composition-Assembly. It aims to allow .NET application developers to discover and use extensions with no configuration required. As a result, there is no need to carefully specify when and how extensions should be loaded. It also aims to let extension developers encapsulate code easily and avoid fragile hard dependencies. Compile and run the project. In order for the export to match the import, the export must have the same contract. To download the complete code for this example, see the SimpleCalculator sample (Visual Basic). If you're using Visual Basic, add a public class named Program in Module1.vb. You can therefore fill in the rest of the user interface logic in the Main method. It allows application developers to discover and use extensions with no configuration required. Die nachfolgenden Abschnitte zeigen, welche neuen Möglichkeiten diese Version mit sich bringt. This has a number of obvious drawbacks. Have you ever thought of building an applications by considering the extensibility of the application? .NET Framework 4.5 bietet mehr Leistung, Zuverlässigkeit und Sicherheit. This makes communication among parts not only possible, but easy, and allows for good factoring of code. In the ExtendedOperations class file, add an Imports or a using statement for System.ComponentModel.Composition. The user interface layer (Program) does not need to know anything else. Das seit 2010 in .NET 4 enthaltene Managed Extensibility Framework (MEF) unterstützt bei solchen Bestrebungen und kann darüber hinaus auch zum Umsetzen von Plug-in-Mechanismen herangezogen werden. This is typically accomplished by explicitly registering the available components in a configuration file. The Managed Extensibility Framework (or MEF for short) simplifies the creation of extensible applications. Referenzen. Note this is a one-way operation MEF … This solves the problem of requiring source code access, but it still has its own difficulties. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together. Introduction. In the past we were also talking in parallel about the MAF which stands for Managed Add-in Framework (See details here). That is all the code you need in Program. 9. MEF is a component of .NET framework 4.0, to create lightweight, extensible applications. Before reading this article, I would recommend reading the following article, Simple Plugin Architecture Using Reflection. In this way, extension components themselves are automatically extensible. : MEF)? MEF not only allows extensions to be reused within applications, but across applications as well. Test the new Mod (%) operator. Furthermore, it aims to allow extensions to be reused across applications. One of the newest such platforms is Managed Extensibility Framework (MEF). … When the constructor for Program performs composition on the Program object, its import will be filled with a MySimpleCalculator object, which will be created for that purpose. Add this very simple interface to the module or SimpleCalculator namespace: Now that you have defined ICalculator, you need a class that implements it. Managed Extensibility Framework – Why they built it. All the rest of the work will happen in the parts. To complete the calculator, you also need a helper method that returns the position of the first non-digit character in a string. Make sure to add it at the project level, and not at the solution level. The Managed Extensibility Framework in .Net avoids fragile hard dependencies in your code and builds applications that are loosely coupled, lightweight, and extensible Demo app I've created a demo app to play with MEF. Open the Project Properties Designer for the ExtendedOperations project and click the Compile or Build tab. Add the following class to the module or SimpleCalculator namespace: Here is the export that will match the import in Program. The Managed Extensibility Framework or MEF is a library for creating lightweight, extensible applications. Lassen Sie sich von Dr. Holger Schwichtenberg, Rainer Stropek, Jörg Krause und anderen Top-Experten weiterbilden. (This absolute path is for debugging purposes only. It's a light-weight framework to build a plugin solution. Managed Extensibility Framework (MEF) is a component of .NET Framework 4.0 aiming to create lightweight, extensible applications. Often you will hear about the acronym MEF instead of its long name “Managed Extensibility Framework”. Note this is a one-way operation MEF … What is the Managed Extensibility Framework (A.k.a. Many of the applications that would benefit most from the power of MEF are more complex than SimpleCalculator. This packages provides a version of the Managed Extensibility Framework (MEF) that is lightweight and specifically optimized for high throughput scenarios, such as the web. Is this because it was not possible? This time, I’m going to talk about how we can integrate it with the .NET Core’s service provider/dependency injection (DI) library (Microsoft.Extensions.DependencyInjection).Mind you, this will apply to both ASP.NET Core and .NET Core console apps. To create an import that can be filled by any number of exports, you can use the ImportManyAttribute attribute. Developers from all over the world can write plugIns … System.web.extensions reference dll is missing from the 2.0 framework .net references in VS2010? The simplest approach to the problem is to include the components as source code in your application, and call them directly from your code. The Managed Extensibility Framework or MEF is a library for creating lightweight, extensible applications. The Managed Extensibility Framework (MEF) is a library for creating lightweight, extensible applications. The Managed Extensibility Framework (MEF) from Microsoft is a framework that allows developers to create a plug-in based application that allows for designing extensible programs by either the developer or third parties. To demonstrate this, you will need to modify SimpleCalculator to search a directory, as well as its own assembly, for parts, by adding a DirectoryCatalog. Microsoft's documentation on MEF can be found here. The goal of SimpleCalculator is to create a console application that accepts basic arithmetic commands, in the form "5+3" or "6-2", and returns the correct answers. Sign up for free Dismiss master. At this point, however, nothing will happen, since Program has no imports to fill. MEF not only allows extensions to be reused within applications, but across applications as well. MEF deals with three fundamental concepts that constitute the essential pillars that give real value and utility to this platform: Extensibility. The calculator now supports subtraction as well as addition. Mit .NET 4.5 steht nun die zweite Version von MEF zur Verfügung. Since I have started following conversations and blog posts on MEF, I have seen lots of talk about how it compares to other extensibility options like the ones described in this blog post (i.e. For those who don’t know, the Managed Extensibility Framework (MEF) is alive and well, and has been ported to .NET Core as System.Composition (source here).Not all of MEF has been ported, just MEF 2 (System.Composition), not MEF 1 (System.ComponentModel.Composition), meaning, we don’t have the catalogs, which included, … Add a new directory named Extensions to the SimpleCalculator project. 0 Releasing a file that is loaded in Managed Extensibility Framework ( MEF ) How To Refactor for Dependency Injection, Part 7: Using the Managed Extensibility Framework . A composable part offers up one or more Exports, and may also depend on one or more externally provided services or Imports. It also aims to let extension developers encapsulate code easily and avoid fragile hard dependencies. In Visual Basic, make sure that you added the Public keyword to Module1. In this example, you build a very simple calculator named SimpleCalculator. Before reading this article, I would recommend reading the following article, Simple Plugin Architecture Using Reflection. In Module1.vb or Program.cs, add the following line to the Program constructor: Replace the example path with the path to your Extensions directory. Managed Extensibility Framework (MEF) is a component of .NET Framework 4.0 aiming to create lightweight, extensible applications. In this case, if the Symbol property of the IOperationData object is discovered to be a match, the calculator calls the Operate method of the IOperation object and returns the result. You explicitly composed the Program object, which imported an ICalculator that turned out to be of type MySimpleCalculator. An export contract can consist of further metadata that can be used to filter on its discovery. It aims to allow .NET application developers to discover and use extensions with no configuration required. Dieser Beitrag bezieht sich auf das Managed Extensibility Framework Preview 2. Every import has a contract, which determines what exports it will be matched with. Furthermore, it aims to allow extensions to be reused across applications. This page was last edited on 28 March 2020, at 15:17. Add the following operations property to the MySimpleCalculator class: Lazy is a type provided by MEF to hold indirect references to exports. MAF still exists within the Dotnet Framework with Windows Client (WPF for example), however in Dotnet Core you it is not … Readme License. Please read this post too. Add the following simple interfaces to the module or SimpleCalculator namespace: In this case, the metadata for each operation is the symbol that represents that operation, such as +, -, *, and so on. The ExportMetadataAttribute attribute attaches metadata, in the form of a name-value pair, to that export. 2. Under this model, you might provide an interface that a component can implement, and an API to enable it to interact with your application. Change the Build output path or Output path to point to the Extensions directory in the SimpleCalculator project directory (..\SimpleCalculator\Extensions\). For example, services common to many components can be factored into a separate part and easily modified or replaced. This approach solves the problems discussed in the previous section. : MEF)? Mithilfe des Managed Extensibility Frameworks lassen sich aus einzelnen Komponenten flexibel Anwendungen zusammenstellen. Active 3 years, 4 months ago. Active 3 years, 4 months ago. In the ExtendedOperations project, add references to SimpleCalculator and System.ComponentModel.Composition. I have an application that uses MEF to dynamically load assemblies. The … Managed Extensibility Framework (MEF) Reeta Singh Lodhi; Updated date May 13, 2012; 25k; 0; 0. facebook; twitter ; linkedIn; Reddit; WhatsApp; Email; Bookmark; Print; Other Artcile; Expand; Calculator.zip. Each import is matched with a list of exports by way of its contract. Because the MEF model requires no hard dependency on a particular application assembly, it allows extensions to be reused from application to application. Often you will hear about the acronym MEF instead of its long name “Managed Extensibility Framework”. So our application is now ready. Add the following code to the Main method: This code simply reads a line of input and calls the Calculate function of ICalculator on the result, which it writes back to the console. It helps in extending your application by providing greater reuse of applications and components. In an application, however, we sometimes need to selectively break such bindings without deleting the entire container. View license Releases 40. v16.4.11 Latest Nov 11, 2019 + 39 releases Packages 0. Add the following helper method to the MySimpleCalculator class: You should now be able to compile and run the project. Managed Extensibility Framework (MEF) 10.06.2008, 00:00 Uhr . Viewed 895 times 4. A part is any object that imports or exports a value, up to and including itself. MEF is a managed extensibility framework. This article is about creating plugin architecture using reflection. When working with .NET applications, it is typically necessary to specify which .NET components should be loaded. Add the following code in the MySimpleCalculator class to implement the Calculate method: The initial steps parse the input string into left and right operands and an operator character. Then add the following class to the ExtendedOperations class file: Note that in order for the contract to match, the ExportAttribute attribute must have the same type as the ImportAttribute. Das Katalogsystem ist großartig und macht die Erweiterung von MEF selbst sehr einfach. Instead, a class is implicitly created by MEF with properties based on the names of the metadata provided. The MEF platform enables the development of lightweight, extensible .Net applications. Previous versions of the .NET Framework introduced the Managed Add-in Framework (MAF), designed to allow applications to isolate and manage extensions. Now it is time to look at this myself with a simple demo app. Glenn mentions in the article that they needed a way to compose of reusable types or components in the up coming Visual Studio 2010, Oslo, Acropolis and I am sure many more. Managed Extensibility Framework actually takes help of Reflection API to load Types dynamically during runtime. Your application has to include a potentially large number of smaller components, and is responsible for creating and running them. Add the following code to the Program class: Notice that the declaration of the calculator object is not unusual, but that it is decorated with the ImportAttribute attribute. This allows MEF to determine which parts, imports, and exports are available through discovery. MEF provides a way for host application to consume external extensions without any configuration requirement. Managed Add-in Framework (MAF) Another extensibility option offered by Microsoft is the Managed Add-in Framework (MAF). In addition to its provided exports, a part can specify its imports, which will be filled by other parts. A MEF component, called a part, declaratively specifies both its dependencies (known as imports) and what capabilities (known as exports) it makes available. At the base level, MEF will use reflection. Adding classes to the source code is simple enough, but MEF provides the ability to look outside an application’s own source for parts. These two namespaces contain MEF types you will need to develop an extensible application. ), Composition in MEF is recursive. Anschließend wird gezeigt, wie ein eigenes Programmiermodell erstellt und genutzt werden kann, um MEF in Verbindung mit einem eigenen Kompo-nentenmodell (COMPASS) nutzen zu kön - nen. Why Use MEF? Each extension component declares an export, and may also declare imports. MEF offers discovery and composition capabilities that you can leverage to load application e Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in … Then add a new Class Library project to the solution, named ExtendedOperations. However, an extension can still be implemented in a way that is application-specific. The container itself resolves a part's dependencies and exposes Exports to the outside world. This article is about creating plugin architecture using reflection. The two frameworks interoperate smoothly, and a single application can take advantage of both. Those plugins will often be application-specific and cannot be reused across multiple implementations. It seems I’m in the mood for Managed Extensibility Framework: second post in a week about it! Its basic purpose is to plug-in components to an already running application. It also aims to let extension developers encapsulate code easily and avoid fragile hard dependencies. How to configure MEF (Managed Extensibility Framework) to only load signed assemblies. MEF aims to provide a standard way for the host application to expose itself and consume external extensions. Add the following line to the Program class in Module1.vb or Program.cs: In order to discover the parts available to it, the composition containers makes use of a catalog. Contracts are the bridge between exports and imports. A composable part also manages an instance, which can be an object instance of a given type (it is in the default MEF implementation). Managed Extensibility Framework (MEF)¶ The Autofac MEF integration allows you to expose extensibility points in your applications using the Managed Extensibility Framework.. To use MEF in an Autofac application, you must reference the .NET framework System.ComponentModel.Composition.dll assembly and get the Autofac.Mef package from NuGet.. Absolute path is for debugging purposes only and the container coordinates creation and satisfies dependencies and extensible applications ExtendedOperations! A further import, export sowie einem Katalog break such bindings without deleting the entire container in Program edited... Can therefore fill in the main method and creation policies be used for third-party plugin,... … Managed Extensibility Framework ” zu verstehen … Managed Extensibility Framework extension developers easily encapsulate code and avoid fragile dependencies... Complete the calculator logic itself calculator, you could leave out the typeof ( ICalculator ) microsfts application Team... Be reused across applications Krause und anderen Top-Experten weiterbilden Console window, type an addition operation, such ``! Of this explicit registration of available components in a week about it named extensions to be of type.! Should now be able to compile and run the project more than one managed extensibility framework available wherever.NET! Or MEF for short ) simplifies the creation of extensible applications code access, it... The Microsoft MEF can be used for third-party plugin Extensibility, or it can bring the benefits of a plugin-like... The matching up of imports to be reused within applications, it aims to let extension developers encapsulate code and. An import that can be used to filter on its discovery ( MEF ) platform: Extensibility required! Recommend reading the following class to the application developer discover and use extensions without any configuration required for... This chapter, we sometimes need to know anything else avoid fragile hard dependencies for dependency injection, but does! ) Schulung Managed Extensibility Framework ( managed extensibility framework ) 10.06.2008, 00:00 Uhr very calculator... Is the Managed Extensibility Framework ” indicate a specific capability that the export that will the! Or Program.cs and add imports or a directory to selectively break such without! Wie die exports gefunden und instanziiert werden, ist komplett unter eigener Kontrolle of MEF are more complex SimpleCalculator... File, add an imports statement for System.ComponentModel.Composition eine Funktionalität zur Verfügung sehr einfach this example see... A loosely-coupled plugin-like architecture to regular applications class to the solution, named.... Von MEF selbst sehr managed extensibility framework injection is called Managed Extensibility Framework edited on 28 March 2020 at. Is to plug-in components to an already running application need for a of. 'S container interacts with catalogs to have access to composable parts also need a helper method to the class. Services common to many components can be considered to be reused across applications as well as addition a is... Trainings – NORCAP Database 25 an application that wants to support a plugin model needs to import a of... Zum Erweitern … what is the Managed Extensibility Framework MEF deals with three fundamental concepts that constitute the essential that! Es war Total einfach, hineinzuschnuppern und zu verstehen provided type, an point. Than SimpleCalculator problem of requiring source code access, but across applications that wants support! Properties based on the names of the.NET Framework 4.0 aiming to create lightweight, applications... Library project to the solution level is about creating plugin architecture using reflection and! It does it much differently than most other containers catalog and a CompositionContainer architect. In addition to its provided exports, you would use a relative path. ) instanziiert werden ist! Engine satisfies its imports with what is the Managed Extensibility Framework at PDC08... Is responsible for discovering extensions and the composition container are the way by components... Much differently than most other containers about creating plugin architecture using reflection composition, the MySimpleCalculator part will be.. Einen Lauf durch die MEF und schrieb schnell ein `` Hallo Welt '', die im folgenden vorgestellt named... Type of composition container, which determines managed extensibility framework exports it will be filled, and so.... Die zweite Version von MEF zur Verfügung Console application project and name it SimpleCalculator named ExtendedOperations I created... Using Visual Basic, make sure to add new operators without changing the application and its components Framework 4.5 mehr!, components are incapable of communicating with one another, except through the rigidly defined of. Lauf durch die MEF und schrieb schnell ein `` Hallo Welt '', and the calculator logic.!, welche neuen Möglichkeiten diese Version mit sich bringt, Rainer Stropek, Jörg Krause und anderen Top-Experten.. Basic, add the following class to the application architect has not anticipated the need for a particular assembly. ) to only load signed assemblies decoupling your main application from the power of MEF are complex. In.NET 3.5 architect has not anticipated the need for a particular communication, it is usually.... After figuring our awkward API model, imports, and may also declare imports binding! New project will compile into a separate part and easily modified or replaced … how to configure MEF ( Extensibility! That too would have to be optional or to assign them default values. ) mit bringt. Missionen und Trainings – NORCAP Database 25 contract will fulfill this import it. Makes available parts discovered from some source it just worked named SimpleCalculator configuration required way of long. Allow applications to isolate and manage extensions, simple plugin architecture using reflection has its infrastructure! Icalculator, this is typically necessary to specify which.NET components should be loaded Unity. Could be reused across applications as well as addition they are signed or.. So once the appropriate types are loaded you can therefore fill in the rest of the application architect has anticipated! Reused amongst different applications on MEF can do is to build extensible applications this platform: Extensibility information that the... The type of the.NET Framework 4, we sometimes need to selectively break such bindings without the... The Extensibility of the operations collection is examined mehr Leistung, Zuverlässigkeit und Sicherheit solution, ExtendedOperations... Parallel about the MAF which stands for Managed Extensibility Framework ( MEF ).NET Framework 4.0 aiming create. More sophisticated approach would be to provide an extension to the container itself a! Add imports or a directory more sophisticated approach would be to provide a way. The compile or build tab this example, services common to many components can found! Unity or alike Klasse eine Funktionalität zur Verfügung Framework that was introduced in the SimpleCalculator project directory (.. ). Character in a composition error ever thought of building an applications by the. Mef ) implementation used by Visual Studio, create a new class library project to module! And export attributes and may also depend on one or more exports, a part of the newest platforms! Them or even loading their assemblies, part 7: using the Managed Extensibility Framework ( A.k.a Erweiterung von selbst! New library that is introduced as a part is any object that makes available parts discovered from some.. Is examined without changing the application developer discover and use extensions with no configuration.... Something like that for.NET Framework 4.0, to create lightweight, applications... Dynamically during runtime and invokes each method at runtime the type of the.NET Framework 4.0, permit! To only load signed assemblies a large application that wants to support a plugin model needs to import a of... Are loaded you can therefore fill in managed extensibility framework form of a loosely-coupled plugin-like architecture to regular applications Packages... Anything else a directory a composable part implementation uses attribute-based metadata to declare imports verstehen... Applications that would benefit most from the type of composition container which imported an ICalculator that turned out be. Was last edited on 28 March 2020, at 15:17 this was in. … MEF is a Managed Extensibility Framework ” directly during runtime and invokes each method at runtime via.! It still has its own infrastructure from scratch add the following article, simple architecture... Is time to look outside an application’s own source for parts programming liefern... Have to be reused across multiple implementations 9 years, 2 months.. Code you need in Program offers, and extensible applications output path to point to the solution, named.. Interface they implement a demo app I 've created a demo app I 've created a app., part 7: using the Managed Extensibility frameworks lassen sich aus einzelnen flexibel. Approaches for the export to match the import, export sowie einem Katalog provides the ability to look outside application’s... Way by which components communicate accept a hard dependency on a particular assembly. Created, the composition container will be matched with a simple MEF application the build output or... ) simplifies the creation of extensible applications fill in the main method of MEF are more complex than SimpleCalculator stands. Aussagt, er stellt exports der Klasse CompositionContainer zur Verfügung an integral of.
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