Hi all,

i'm going crazy with the Interop.

This very simple progam in Visual Studio works fine


It just starts an empty EXCEL

Tryping to to the same with xpa 4.7:

Declaration of the variable works fine:


Trying to start a constructor:




"Can not create an instance of an abstract class or interface"

I can understand this message, but why is this in Visual studio possible?

Regards
Friedrich