Problems with COM/Assemblies

[Chris Uttenreither]

Hello everyone. I'm trying to write a C# application which will make
use of a COM object. We'll call it x_server. I've added a reference to
this COM object in my C# Project, done what I needed to do, and it
compiles. Below is some stuff I can see in the OLE/COM Object Viewer
after adding this reference.


Under "Type Libraries" tab:

8FA0973F-0D61-11D3-9971-0060B086F989 (xserver)

Under "All Objects" tab:

8FA0973B-0D61-11D3-9971-0060B086F989 (xserver.x_server)
8FA0973E-0D61-11D3-9971-0060B086F989 (xserver.connector_class)

So, in a nutshell, using this reference gives you access to two objects
in the xserver namespace, plus a bunch of cool events and properties.
When trying to run my application, I get this exception:

Exception caught: System.Runtime.InteropServices.COMException
(0x80040154): COM object with CLSID
{8FA0973B-0D61-11D3-9971-0060B086F989} is either not valid or not
registered.
...

Note that this exception is not thrown for the xserver itself -- it's
thrown for xserver.x_server. (And presumably it would be thrown for
xserver.connector_class as well, were it checking that first.) It
appears that I have access to the xserver COM object itself, but not the
classes it contains. Any suggestions? This is really got me stumped.

Thanks!

 

[Mohamoss]

hi Chris
This is an exception that is thrown by the com object, not by your C#
application. When a com object returns a failure HRESULT it raised to the
managed caller in a ComException object. So you might need to get back to
the com object that you are calling to see what failure happens there ,
then returned to you application .. hope that helps
Mohamed Mahfouz
MEA Developer Support Center
ITworx on behalf of Microsoft EMEA GTSC