A lap Around the Managed Extensibility Framework

Glenn Block Program Manager

Microsoft Corporation

TL33

TL49Related sessions

MEFMakes ExtensibilityFunFeasibleFlyFrupendousFastFlavorfulFabulous

The MEF Guild Team

Extensibility

Why Are There So Few Extensible Apps?

Developers Desire Extensibility

Extensibility ChallengesHard to write, hard to useNo standardHard To Achieve Extensibility2

http://www.flickr.com/photos/21507453@N08/2096004461/

We're Making It EasySystem.ComponentModel….Open and Easy to extendSimple To Implement

Managed Extensibility Framework

announcing

Common Extensibility ScenarioWindows and Menus

Application

Extension A

Extension B

Need a Toolwindow

Got a Toolwindow

Need Menus

Got aMenu

Need a MenuService

Got a MenuService

Hello MEF

Glenn BlockProgram ManagerMEF

demo

Common Extensibility ScenarioWindows and Menus with MEF

NeedGot

ImportExport

Extension A

Common Extensibility ScenarioWindows and Menus with MEF

Application

Extension B

Need Menus

Got Menus

Got a MenuService

Need a Toolwindow

Export MenuService

Import Menus

Export Menus

Need a MenuService

Import MenuService

Import Toolwindow

Got a Toolwindow

Export Toolwindow

Extension APart B

Common Extensibility ScenarioComposition with MEF

Application

Extension B

Part A

Part C

They're all parts!

Windows And Menus With MEF

public interface IToolWindow { }public interface IMenuService { } public interface IMenu { } public class Application{ [Import] public IEnumerable<IToolWindow> ToolWindows { get; set; }  [Import] public IEnumerable<IMenu> Menus { get; set; }} [Export(typeof(IMenuService))]public class MenuService : IMenuService { }

Import Toolwindows

Import Menus

Export a Menu Service

Windows And Menus With MEF

[Export(typeof(IToolWindow))]public class SomeToolWindow : IToolWindow{ [Import] public IMenuService MenuService { get; set; }} [Export(typeof(IMenu))]public class SomeMenu : IMenu{}

Export a Toolwindow

Import a MenuService

Export a Menu

An Application Built Of Composable Parts

The MEF ABCs

First, The Composable Part

Part A

Parts Relate Through Contracts

ContractPart

BPart

A

Imports Are Contracts A Part Needs

Part B

Import

Import

Export

Export

Exports Are Contracts A Part Offers

Part B

The Container Is The Matchmaker

Container

More MEF Toys

http://www.flickr.com/photos/jenlightjenlight/58730309/sizes/o/

Catalog

Container Queries Catalogs

Container

Parts Can Load Lazily

Part B

Part A

Export<A>

ContainerContainer

Parts Can Have Different Lifetimes

Part A

Singleton

Part A Part A Part A

Factory

MEFMakes ExtensibilityFunFeasibleFlyFrupendousFastFlavorfulFabulous

Where Can I Get MEF Today?

MEF on Codeplex (including samples and full source!!!)http://tinyurl.com/MEFHome

Programming Guide:http://tinyurl.com/MEFGuide

Discussions: http://tinyurl.com/MEFDiscussions

Team Blogs: http://tinyurl.com/MEFBlogs

Email me: gblock@microsoft.com

Where Can I Get MEF In The Future?

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© 2008 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market

conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.