>>How do I drag a class from the class designer and drop in into a column on a grid?
>>
>>I am interested here in the specifics of how this drag/drop works, NOT in merely solving the problem of how to add a control to a grid column.
>>
>>Thanks
>
>W/o Drag and Drop :-)
>Just edit the column and Click on the control in Toolbar and then click in the column.

I think I made the same mistake a few times. First time you answered, second time I searched for your answer to remind myself :)