[dba-VB] DataGridView Custom Button Editor control

Guys, I'm struggling with a vanilla DataGridView (we normally use third
party grids in our apps, but I was instructed not to in this one).  I
need an editing control for a button cell.  I can create the buttoncell
class and the other classes required, but I'm sunk when it comes to
getting the blasted thing to show up on the grid.  I do this all the
time with third party controls, but they've already done all the hard
work of customizing the underlying control.  This time I'm doing it the
hard way.  Any suggestions?

Charlotte Foust