Comment Feed for Channel 9 - 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework http://ecn.channel9.msdn.com/o9/previewImages/100/477777_100x75.jpg Channel 9 - 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework In this episode of 10-4, we take a look at a new library in .NET Framework 4 and how it helps developers write applications that are more extensible and easier to maintain than before. For more information on the Managed Extensibility Framework, make sure to check out its home on Codeplex: http://www.codeplex.com/mef. Source code for demo: http://cid-1b51ad25aad8fc86.skydrive.live.com/self.aspx/.Public/ManagedExtensibilityFramework.zip For more 10-4 episodes, be sure to visit: http://channel9.msdn.com/shows/10-4 10-4! Over and out! en Sat, 25 May 2013 23:06:39 GMT Sat, 25 May 2013 23:06:39 GMT Rev9 Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Nice intro!  I had a question, and I tried looking around the CodePlex documentation first, and did not find the answer.  

This is more of a problem with my documentation reading skills than the authors document writing ability.

Anyways, back to the question, if I have two or more equivalent exports, that have their imports satisfied, how is the import resolved? First in wins?  I think it has something to do with the catalog.

posted by Jsoh

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633832252450000000 Wed, 15 Jul 2009 03:27:25 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633832252450000000 Jsoh Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Very nice, especially the part about the NetworkCatalog.

So you mention that the source is (will be?) available online. But I cannot find a link or attachment?

 

Remco.

posted by Remco Ros

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633832897920000000 Wed, 15 Jul 2009 21:23:12 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633832897920000000 Remco Ros Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework It was in the post comments... http://www.codeplex.com/mef

posted by Jsoh

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633832960860000000 Wed, 15 Jul 2009 23:08:06 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633832960860000000 Jsoh Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework That's the MEF site. I mean the source from this presentation/example application. (or is this included in MEF Samples?)

posted by Remco Ros

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633833338060000000 Thu, 16 Jul 2009 09:36:46 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633833338060000000 Remco Ros Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Sorry for the delay! The code can be found at http://cid-1b51ad25aad8fc86.skydrive.live.com/self.aspx/.Public/ManagedExtensibilityFramework.zip

 

Please let me know if that doesn't work!

posted by JasonOlson

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633838316230000000 Wed, 22 Jul 2009 03:53:43 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633838316230000000 JasonOlson Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework In that situation, we will throw an error because we were expecting to only find one, and we found two. This is the only real "deterministic" way to behave for us.

posted by JasonOlson

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633838316670000000 Wed, 22 Jul 2009 03:54:27 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633838316670000000 JasonOlson Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework [Obsolete]

System.AddIn

 

posted by Ray Jezek

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633844044830000000 Tue, 28 Jul 2009 19:01:23 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633844044830000000 Ray Jezek Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Very good explanation of MEF. I was looking into Spring.Net. How is MEF compared to Spring. Is it configurable using XML files or is it done through code.

 

Why not Spring.Net?

 

Just want to hear your take on it; I'm new to Dependency Injection.

 

Thanks.

posted by Visionsoft

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633880975240000000 Wed, 09 Sep 2009 12:52:04 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633880975240000000 Visionsoft Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Omg, this is very cool.. great episode..

 

I was wondering if there are any performance implication when linking dependencies to all objects?

Also, if you can talk more on further episodes about what other features like this will come in .net framework 4 that help us follow other best practices, patterns or SOLID principles easily.

 

Again, great job!

 

Thanks,

posted by MariaMarcano

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633905339340000000 Wed, 07 Oct 2009 17:38:54 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633905339340000000 MariaMarcano Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Excellent. Simple and cool stuff to use in the real world.

posted by hoon1234

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633920389310000000 Sun, 25 Oct 2009 03:42:11 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633920389310000000 hoon1234 Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Spring is an IoC container while MEF is for plugins. An IoC is used when you know your dependencies at design time and typically deals with "one" dependency (for that area of the app) while MEF deals with many.

 

For example, with IoC, at design/debug time you may inject a simple console logger for your app or even a mock logger while at production/runtime you will replace it with a proper logger that writes to a file or database but with MEF at runtime you are looking to discover "all loggers" that are available and call them (of course you can just pick up a single logger using the catalog) so your output can be piped to many.

 

You could use MEF to wire dependencies like an IoC but it is not meant for or optimized for such behavior. MEF also has advantages with the way stuff is exported and imported in that it is not tied to types which means that your app can be opened up to plugins written in dynamically typed languages.

 

HTH,

Benjy

posted by santosh_b

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633952726650000000 Tue, 01 Dec 2009 13:57:45 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633952726650000000 santosh_b Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework Favorite part:

 

"Hey are you a plumber? can you satisfy my needs?"

 

I LOL'd

posted by evanlarsen

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633996959780000000 Thu, 21 Jan 2010 18:39:38 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c633996959780000000 evanlarsen Re: 10-4 Episode 26: Creating Extensible Applications with the Managed Extensibility Framework posted by Mike Crystal

]]> http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c634238005020000000 Wed, 27 Oct 2010 18:21:42 GMT http://channel9.msdn.com/Shows/10-4/10-4-Episode-26-Creating-Extensible-Applications-with-the-Managed-Extensibility-Framework#c634238005020000000 Mike Crystal