Old VB6 ActiveX EXE to C#

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I am converting an old desktop application that uses 2 ActiveX EXE's. It uses CreateObject() to return a reference to the COM object. This reference is then used to pass in pertinent information to the COM component such as database connection information and call the appropriate fuctions. There is no need to use this in IE. It is only used from this desktop app.

What would be a way to do this in .Net using C#.

Posted 19-Dec-12 6:38am

rshepp

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CHill60 · Answer 1 · 2012-12-19T06:55:00

Right click References, Add Reference
select the COM tab in the dialog box and locate your activeX object - I'll call mine objA for now - and hit Ok. objA should appear in your list of references.

In your code you will need to put

C#

using objA;

Then you can use it like any other object e.g.

C#

objA a = new objA();
Debug.Print(objA.aMember.ToString());

When you build your project you will get an additional file called Interop.objA.dll which will need to live in the same folder as your exe

I've successfully used this approach with several legacy VB6 COM DLLs and EXEs - but apologies for any typos!