>I have replaced the textbox in a grid column with a command
>button with the caption 'View' to indicate when the memo
>field has data in it.
>
>Anyone know how to dynamically set the button's FontBold
>property when the field has data in it?
>
>Thanks

In Init and refresh method of your textbox try this code:
this.FontBold=not empty(this.parent.controlsource)