OK, I got it to work!



I used a DataGridViewButtonColomn. The rules involved were too complicated to just allow the user to select a value anyway. In the CellContentClick event handler, I can call the stored procedure (via a BO of course), and then update the BO no problems.



If I had to allow the user to select a value, I'd probably try configuring the readonly BO to allow updates via a stored procedure.



That was a tough one! Thanks!

Not sure that I helped much, but I might have made you look in a few new directions... glad you got it working