Question

I have a main app and a plugin. The main app is exporting an IHost object and the plugin is importing an IHost object. I ran mefx and it recognizes both of those. But when I do /causes on the plugin it gives me a ImportCardinalityMismatchException. My container sees the plugin, but when I call Me.container.getExports(of IController)() it doesn’t return anything.

My Controller looks like this:

Class Controller 
   Implements IController   
   ' ...
    <Import()>
    Public Property Host As Lazy(Of IHost)
   ' ...
End Class

Answer 1

I had to <ImportMany()> in my plugin. Then for the variable I was importing to I needed to make it IEnumerable(Of Lazy(Of IHost)) Or use Lazy(of IHost) if you want to do a <Import()>