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microsoft.public.dotnet.framework.interop

how to create a com object using a progid read from config file

Benny

4/24/2007 10:44:00 PM

How to I create a COM object when all I have is a GUID that is read from an
ext config file and w/o using interop to raw WinAPI calls.

For example, I defined interface IFoo in a .net dll. I also have a
ServicedComponent that derives from IFoo named FooSvr.

In my .net client code, I want to create that object (of which the guid is
read programatically from a ext config file).

I want to do something like following in C#:
object o = CoCreateInstance(guid-read);
IFoo oFoo = o as IFoo;

Thanks.
3 Answers

wawang

4/25/2007 1:53:00 AM

0

Hi,

You can use Type.GetTypeFromCLSID() to obtain a type from the CLSID, then
use Activator.CreateInstance() to create an instance from the type.

Here's an example in C# which is creating an instance of IE's
IInternetSecurityManager:

#IEBlog : IE Security Zones
http://blogs.msdn.com/ie/archive/2005/01/26/3...


Please feel free to let me know if there's anything unclear. Thanks.


Sincerely,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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wawang

4/27/2007 1:37:00 AM

0

Hi,

Have you seen my last reply? Does it help?

Regards,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Benny

4/30/2007 7:00:00 PM

0

Hi Walter, thank you very much. It is exactly what I am looking for.