MEF Preview 9 released


MEF Preview 9 was released


MEF preview 9 changes will be reflected the in the release of .NET 4.0 and Silverlight 4.0.


except from bug fixing, there was some changes to the API,

most of the changes is related to  System.ComponentModel.Composition.Initilization.dll,

which is not yet available only for none Silverlight application ๐Ÿ™


here is a short list of API changes:

  • PackageCatalog were brought back, and changed it name to DeploymentCatalog.

  • PartCreator was renamed to ExportFactory.

  • PartInitializer was renamed to CompositionInitializer

  • CompositionHost.InitializeContainer was renamed to CompositionHost.Initialize

i do hope that the System.ComponentModel.Composition.Initilization.dll will finally find it place

into the CLR 4.0 release.


you can download it from the MEF codeplex.


the information was taken from Wes’ Puzzling Blog.



From: Glenn block

Unfortunately we will not be shipping CompositionInitializer / Host as part of .NET 4.0. .NET 4.0 and SL are on different ship cycles and the desktop locked long before we had the functionality in SL. We will do an OOB release on codeplex for desktop. I currently have an early version on my SkyDrive, but we will get bits updated for codeplex. The plan is to role CI into the desktop in the future.


ืชื’ื™ื ืฉืœ Technorati:โ€ ,,,,,

Add comment
facebook linkedin twitter email

Leave a Reply

Your email address will not be published.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>



  1. bancdeswiss2013/12/22 ื‘ 14:45

    Hi there i am kavin, its my first occasion to commenting anywhere, when i read this article i thought i could also make comment due to this brilliant piece
    of writing.

  2. how to start a free blog and make money2014/08/04 ื‘ 06:43

    I take pleasure in, result in I discovered exactly what
    I was taking a look for. You’ve ended my four day long hunt!
    God Bless you man. Have a nice day. Bye