Grid Layout Panel and Panel in the Designer

[Chris]

Hello -

I'm trying to compose a Composite Control using 2 controls, one of
which is exactly what the Grid Layout Panel from "HTML" in the toolbox
is. I'm currently doing this with the HtmlGenericControl class, but
the problem is that the designer never recognizes it to be what the
Grid Layout Panel is - I cannot drag and drop other smaller controls
onto it.

This is the same problem I ran into using the Panel class also. Using
the ms_positioning="GridLatout" doesn't help either. I imagine I'm
missing one of those [bracketed] directives that allows the Designer
to recognize this control as a container for others. Is this the
case?

thanks,
Chris