C# to VB6 COM events (“object or class does not support the set of events”)

Question

Really pulling my hair out with this one...

I have a C# project with an interface defined as:

/* Externally Accessible API */
[InterfaceType(ComInter         


        

Answer 1

I was defining the interface using the delegate instead of the event:

/* Externally Accesssible Event API */
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface ISerialEvent
{
    [DispId(5)]
    void DataEvent();
}

should be

/* Externally Accesssible Event API */
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface ISerialEvent
{
    [DispId(5)]
    void dEvent();
}