Register COM component with different version

See more:

C#

.NET

COM+

interop

Hi guys,

I met an issue when I am trying to register the COM component, which is created by C#. Here is the scenario:
1.Create a strong name assembly using C# with two version, such as A.dll(1.0.0.0) and (2.0.0.0)
2.Since a COM client need to use these two .net assemblies, then I tried to register these two .net assembly as COM component using regasm.exe cmd tool
3.Install two version of A.dll into GAC

Issue:
when I finished the steps above and checked the registry, I found that the CLSID for A.dll would always be replaced by the later one. E.g. when registering A.dll(1.0.0.0) the CLSID is ***-***-***-***-**1. But when I register A.dll(2.0.0.0) the CLSID would be replaced by a different value, such as ***-***-***-***-**2.

In this case, when the COM client want to use the A.dll(1.0.0.0), it cannot find it because the CLSID is for A.dll(2.0.0.0) already.

If I want to keep both versions of same COM component, what do I need to do?Best Regards,
Ted