Hi Herbie,

thanks for the answer. 

I am referring to this : 

http://msdn.microsoft.com/en-us/library/ee372313.aspx

As fas as I understand, each content type can only be export for one, or more file extensions statically at compile time. 

How do I export content types dynamically based on some user options for example? Is this not possible purely by MEF?

Thanks!