This illustrates how to have a combo box in which you can choose a value and have that record appear in the form. The important code for this is in the AfterUpdate event of the cboISBN control.

The combo box wizard will do this for you automatically. In the second step, choose the third option: "Find a record on my form based on the value selected in my combo box" This must be done on a BOUND form.

Form: Books2 shows a variation to this with 2 columns in the combo.

Form: Books3 shows yet another variation which allows you to choose by either ISBN or Title and the value automatically updates the other combo.