.net - How to create VBA.Collection() object in c#

Question

I need create Interop VBA.Collection object from C# code
I have reference to Interop.VBA in my project

When I'm calling that:

var col = new VBA.Collection()

In runtime I've got an error saying that dll is not registered...
I found that: http://support.microsoft.com/kb/323737/en-us

It might work but I don't have VB6 compiler on my box.
I wonder you know other workaround (or maybe someone can compile this ActiveX to me?)

Answer 1

I haven't tried this, but it might work.

Create an import library for VB6's VBA6.dll. Create your own implementation of its _Collection interface. Use this implementation in place of the VBA.Collection class.

class MyCollection : VBA._Collection
{
    private Dictionary<object, object> _items = new Dictionary<object, object>();

    public void Add(ref object Item, [System.Runtime.InteropServices.OptionalAttribute]ref object Key, [System.Runtime.InteropServices.OptionalAttribute]ref object Before, [System.Runtime.InteropServices.OptionalAttribute]ref object After)
    {
        // Ignoring the Before and After params for simplicity
        _items.Add(Key, Item);
    }

    public int Count()
    {
        return _items.Count;
    }

    public System.Collections.IEnumerator GetEnumerator()
    {
        return _items.Values.GetEnumerator();
    }

    public dynamic Item(ref object Index)
    {
        return _items[Index];
    }

    public void Remove(ref object Index)
    {
        _items.Remove(Index);
    }
}