Calling a COM+ Component remotely using C#

Question

I have a little COM+ component as a service on a remote server.

I´m trying to execute a method of this component using:

Type type = Type.GetTypeFromProgID("ComPlusTest.ComTestClass",serverName);

// Create Service
Object service = Activator.CreateInstance(type);

// Execute Method
String result = service.GetType().InvokeMember("LaunchPackage",
    BindingFlags.InvokeMethod, null, parameters, null).ToString();

The type is returned as null.

What is the best way to do this??

The server is Windows 2003 Enterprise, the service is a .NET component wraped as COM+ (I know that I don´t have to do it that way, but the purpose is to itegrate a legacy App with a .NET component) The purpose of this is just to test that the .NET COM+ Component works.

Thanks in advance!

Is the com object register also on the client side?

Shay Erlichmen
– Shay Erlichmen

2009-10-20 21:02:57 +00:00
Commented Oct 20, 2009 at 21:02 — Shay Erlichmen
– Shay Erlichmen, Commented Oct 20, 2009 at 21:02
No, the COM object is in other server.

Arturo Caballero
– Arturo Caballero

2009-10-20 22:51:09 +00:00
Commented Oct 20, 2009 at 22:51 — Arturo Caballero
– Arturo Caballero, Commented Oct 20, 2009 at 22:51

Randy Levy · Accepted Answer · 2009-10-21 05:36:20Z

1

I haven't tried it, but your approach makes sense. It looks very similar to the Interoperating without Proxies but with a remote server.

Perhaps you are running into some other issue (e.g. configuration or permission)?

Some troubleshooting suggestions:

Try to run your test program directly on the "remote" server.

Also, have you tried changing your first line to:

Type type = Type.GetTypeFromProgID("ComPlusTest.ComTestClass",serverName, true);

This should throw an exception if an error is encountered and may provide you with some more information on the specific issue you are hitting.

answered Oct 21, 2009 at 5:36

Randy Levy

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Arturo Caballero Over a year ago

Thanks, I will add the exception flag to see if I get an exception because right now I´m getting a null.

Daniel Hilgarth · Accepted Answer · 2017-04-19 16:08:57Z

1

I have solved the issue. The COM+ was not correctly installed on the server. I missed the step of configure the assembly in the .NET Framework Configuration Console.

The steps are:

Register the assembly (configure assembly) on .NET Framework Configuration Console
Register the assembly in the GAC
register the COM+ Application in the Component Services Console. Then Add the Component to the actual assembly(dll)

Jeje, I missed the first one.

How ever I appreciate your time on answering the issue.

Thanks!

edited Apr 19, 2017 at 16:08

Daniel Hilgarth

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answered Oct 21, 2009 at 21:12

Arturo Caballero

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