Though managed extensibility framework mef has been there a long time now, but still i think that there should be a simple article for a beginner to start with. Net frameworkcore and simplifies the development of plugin based applications. The editor is built by using managed extensibility framework mef components. The managed extensibility framework mef is a new extensibility model in the.
Framework design guidelines is one of those rare books that can be read at different reading levels and can be useful to different kinds of developers. Open up your applications with the managed extensibility framework. I partnered with addisonwesley to produce a livelessons video series and ended with over 4 hours covering the fundamentals of mef. The managed extensibility framework mef is designed to help you create extensible applications. Mef is an extensibility framework built inside the framework to support the plugin function of the application. The implementation of it may need to change over time. Fundamentals of the managed extensibility framework mef. Framework notes for professionals free programming books disclaimer this is an uno cial free book created for educational purposes and is not a liated with o cial. Net framework notes for professionals book is compiled from stack overflow documentation, the content is written by the beautiful people at stack overflow. Udemy managed extensibility framework, mef, from novice. Net mvc and the managed extensibility framework mef. Now it is time to look at this myself with a simple demo app. Managed extensibility framework mef microsoft docs. I have an application that uses mef to dynamically load assemblies.
Using managed extensibility framework to build a modular. Net framework notes for professionals book is compiled from stack overflow documentation, the content is written by the beautiful people. It avoids hard dependencies and lets the application developer discover and. These include discovery for separation of concerns, metadata for filtering and sorting implementations, and extensibility for highly modular applications.
After watching and read a bit about mef im still a little lost. Learn how to leverage the managed extensibility framework, part of the. Mef is a library for creating lightweight, extensible applications. Working with managed extensibility framework to write. Net library released on codeplex that enables greater reuse of application components. Net framework that provides a simple declarative model for application developers and extenders to. Version 2 of managed extensibility framework mef, a framework for extending. The outcomes of step 2, the self assessment, are the inputs for step 3. This is the first part of the series that i will be continuing on mef. Net software from running on linux or macos in the future. Concrete classes are referenced inside the ui layer by di during the startup inside configureservices method. Text content is released under creative commons bysa.
Managed extensibility framework paperback jan 1 2012. You can build your own mef components to extend the editor, and your code can consume editor components as well. It allows application developers to discover and use extensions with no configuration required. In this post, i will give you a brief introduction to what managed extensibility framework is all about and also create a. See credits at the end of this book whom contributed to the various chapters. Brief introduction to managed extensibility framework mef mef is a library built on top of microsoft. An archive of the codeplex open source hosting site. These include discovery for separation of concerns, selection from fundamentals of the managed extensibility framework mef. Mef can provide the following two key benefits to your application.
Composition, meaning, we dont have the catalogs, which included. Open up your applications with the managed extensibility. Net framework 4 or beyond and helps you to build applications that are lightweight and extensible by adopting a loosely. Images may be of their respective owners unless otherwise specified. Microsofts managed extensibility framework mef is a. Ill cover the conventionbased programming model available in mef. Net mvc and the managed extensibility framework mef april 21, 2009. You can do this by dynamically composing your application based on a set of classes and methods that can be combined at runtime. It also aims to let extension developers encapsulate code easily and avoid fragile hard dependencies. You can find the other posts in the series here how to use unity in a web application, here adding interfaces, here registration by convention, here injecting values, here extensions, here aspectoriented programming, here dependency injection and the first one here introduction. Composition, meaning, we dont have the catalogs, which included, among others, the.
Fundamentals of the managed extensibility framework. From a hotel lobby in the sunny city of durban, southafrica, waiting for my plane transfer after a great teched africa event. The managed extensibility framework or mef is a library for creating lightweight, extensible applications. Managed extensibility framework mef is a component of.
How are you using the managed extensibility framework. However, currently, it is loading my assemblies whether they are signed or not. Managed extensibility framework mef before exploring mef, let me summarize the problem. An introduction to managed extensibility framework mef. This post is about using mef managed extensibility framework in. The microsoft mef can be used for dependency injection, but it does it much differently than most other containers. Microsoft has now changed the license to the mef to the open source mspl license. Managed extensibility framework, mef is a great framework. The following diagram shows the parts and containers present in the managed extensibility framework. The catalog finds the parts from the assembly or a directory.
Managed extensibility framework mef implementation used by visual studio microsoftvs mef. I am carlos quintero, former microsoft most valuable professional mvp 14 times from 2004 to 2018 and passionate and specialist about visual studio extensibility vsx. How to configure mef managed extensibility framework to only load signed assemblies. Mef can be considered to be a dependency injection framework with the capability to discover dependencies across assembly partitions.
Microsofts solution for dependency injection is called managed extensibility framework mef. Visual studio uses managed extensibility framework mef to extend most of the code instead of writing vspackage. Im creating a service for my organization that will be installed on hundreds of computers. The last two are very powerful even for an application that will never see a single plugin or extension. Managed extensibility framework in the editor visual. Mef can be used for thirdparty plugin extensibility, or it can bring the benefits of a looselycoupled pluginlike architecture to regular applications. It also lets extension developers easily encapsulate code and avoid fragile hard dependencies.
For those who dont know, the managed extensibility framework mef is alive and well, and has been ported to. 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. Two of the most significant updates are the support for generic types and the introduction of a conventionbased extension model. Net application developers to discover and use extensions with no configuration required. Posted by anuraj on friday, january, 2017 reading time. A whirlwind tour through the managed extensibility framework. This time, i will be talking about integrating unity with managed extensibility framework mef. The plugin model has been used by the ide itself to ensure that we can hook in some of the code inside the ide as an mef component so that when the ide loads up, it can. The mef managed extensibility framework is a component that comes with. Net developer, you should avoid using the newly released managed extensibility framework as its license prevents its use beyond the windows platform. Start and manage managed extensibility framework projects with the 62 implementation resources. The managed extensibility framework or mef is a library for creating lightweight, and extensible applications. Net notes for professionals framework notes for professionals free programming books disclaimer this is an uno cial free book created for educational purposes and is not a liated with o cial.
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