>Hi I need with the sparse option in .F. teh combo box is displayed in each line.
>With the option in .T. the combobox is displayed only when clcked but the value displayed when not selected does not correspond to the description.
>How can I achieve this effect

You could have two controls. When the focus is not on the control set it to a textbox which based on the code displays the desc. When the control gets focus switch back to a combo.

If you won't be editing in the grid you could do a SQL statment to join the two tables and display the code, or you could use a view.