I have .NET assemblies that are registred in COM+ as
Server applications (own process). I can create and call
them from C++ code with no problem.

If I try to create them from .NET code, the COM+
application starts and the .NET assembly is loaded in the
DLLHOST.EXE process space, but I get an error message:

"File or assembly name [assembly name], or one of its
dependencies, was not found."

This is the code:
Type type = Type.GetTypeFromProgID(progID); // Succeeds
object obj = Activator.CreateInstance(type); // Fails

If I change the COM+ Activation setting from Server to
Library, the above code works.

What's going on here?

Hi steve,
You may fist try to export the typelib and use it as COM to see if it
has problems. If it has no problem , I think you should check if you
registered your .NET COM+ component correctly. You may refer to the
following link for more information,

ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.1033/cpguide/html/cpconregistering
servicedcomponents.htm
please let me know, if you still have problems on that, thanks!


Kind regards,

Ying-Shen Yu [MSFT]
Microsoft Support Engineer

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use. 2001 Microsoft Corporation. All rights
reserved.
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| Sender: "steve" <steve_donnelly@countrywide.com>
| Subject: Can't call .NET to .NET through COM+
| Date: Thu, 21 Aug 2003 19:30:09 -0700
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|
| I have .NET assemblies that are registred in COM+ as
| Server applications (own process). I can create and call
| them from C++ code with no problem.
|
| If I try to create them from .NET code, the COM+
| application starts and the .NET assembly is loaded in the
| DLLHOST.EXE process space, but I get an error message:
|
| "File or assembly name [assembly name], or one of its
| dependencies, was not found."
|
| This is the code:
| Type type = Type.GetTypeFromProgID(progID); // Succeeds
| object obj = Activator.CreateInstance(type); // Fails
|
| If I change the COM+ Activation setting from Server to
| Library, the above code works.
|
| What's going on here?
|
|