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.NET Forum / .NET Framework / Interop / June 2005Registering a COM dll from C#
Hi, we have a software architecture that allows extension via providing COM dlls with specific interfaces implemented. Although we switch the code to .NET, we need to handle old and new COM dlls that extend our product. Part of the initialization of such extensions is the registration of the com dlls that we used to do from code, using LoadLibrary and GetProcaddress. As I have found out, this method cannot be used in .net, but I do not really like the regsvr32 solution. Is there any other way for registering a COM dll from C#? Thank you, Jozsi Hi, Use the RegistrationServices class inside System.Runtine.InteropServices. This essentially provides the same solution as regasm which when given a .net assembly will register it as COM. You need to make sure that your interop classes are assigned GUID's and the ones you want to hide to use [ComVisible(false)] on the class declaration. If you supply COM install and uninstall methods you can perform actions when the assembly is registered (Registry settings etc). Just supply [ComRegisterFunctionAttribute] and [ComunregisterFunctionAttribute] to the methods you want to use for registration and unregistration respectively. Have fun, -james > Hi, > [quoted text clipped - 8 lines] > Thank you, > Jozsi Depending on your architecture and operating systems you support, see if there's anything in the side-by-side COM without registration, using XML configuration files. In effect you'd be adding a new COM DLL and altering the content of manifest files that say what is implemented in the COM Dll instead of adding the Dll and registering it again. See if this helps: http://www.simple-talk.com/2005/03/09/com-server-registration/  SignaturePhil Wilson [Microsoft MVP-Windows Installer] > Hi, > [quoted text clipped - 9 lines] > Thank you, > Jozsi
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