***Disclaimer: This information applies to Visual Studio 2010 Beta 1 only.***
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This is the final part of this post series. I will show how to get the available exports.
To get the available exports I will use a command under the Tools menu:
The menu callback get the first registered IMessagingService export and calls the display message method:
private void MenuItemCallback(object sender, EventArgs e)
{
   var componentModel = base.GetService(typeof(SComponentModel)) as IComponentModel;
   var messaging = componentModel.GetExtensions<IMessagingService>().FirstOrDefault();
   messaging.DisplayMessage("Hello MEF");
}
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Couple of points:
- The SComponentModel service is used to get the available extensions
- The GetExtension method calls the GlobalCompositionContainer, which find all availables <TExport> in the list of containers that are maintaned by the VsExportProviderService class
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Pablo
