Using COM dll problem

[Steven Blair]

I have used COM dll's wuthin my C# apps and have had no problems.
I simply add a reference to the dll and C# does the rest.
When I tried this on several other dll's (all built the same way) I get
the following error:

A reference to 'assemblyname.exe' cou
ld not be added. This is not a valid assembly or COM component. Only
assemblies with extension 'dll' and COM components can be referenced.
Please make sure that the file is accessible, and that it is a valid
assembly or COM component.

The dll's are COM. I have tried using C++ and VB dll's.

Can anyone help with this problem?

Steven
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[Jianwei Sun]

Hi, Steven,

Is the com object resides in a dll file, or exe file...

The error message simply tells you that you are trying to reference a
com object in an exe file (try to find out where the com object you were
using is defined ) ...

HTH..

Steven Blair wrote:

I have used COM dll's wuthin my C# apps and have had no problems.
I simply add a reference to the dll and C# does the rest.
When I tried this on several other dll's (all built the same way) I get
the following error:

A reference to 'assemblyname.exe' cou
ld not be added. This is not a valid assembly or COM component. Only
assemblies with extension 'dll' and COM components can be referenced.
Please make sure that the file is accessible, and that it is a valid
assembly or COM component.

The dll's are COM. I have tried using C++ and VB dll's.

Can anyone help with this problem?

Steven
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[Steven Blair]

Thanks for the response.

It's always a dll I try to access and then I get this error.

Any more information that might help me?
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[Steven Blair]

For anyone interested.

This problem appears to be machine related. Several other PC's in the
office with VS2005 installed can use the COM dll's.
I eventually got the DLL to work by loading VS2003 and adding a
reference via this IDE, and then using the Interop file generated by
VS2003 in my VS2005 setup.

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