I use combo box to search existing customers to enter into order form. But combo box just can display one field, either CustomerID or Name. But Name can not identify a customer cause sometimes two customers have same surname and first name. My solution is to use customerID to identify customer, but I want user can see the name at the same form cause name is more meaningful for user. I want to design control to set value of customer name automatically after the customerID is selected in the combo box. How to write coding for this functions. Please good people help! Thanks very much.