When a field needs to be calculated using data from another field, you don't have to perform the calculation yourself. You can create a form that automatically calculates the field for you. For example, after entering a product discount in a form, you want Access to update the discount price field automatically (Figure A).
Follow these steps:
- Open the form in Design View.
- Right-Click the Discount field.
- Click on the Event tab and click the Build button of AfterUpdate property box (Figure B).
- Enter the following code at the prompt (Figure C):
Private Sub Discount_AfterUpdate()
[Discount Price] = [UnitPrice] * (1 - [Discount])
- Press Alt + Q.
Now, when a discount is entered in the Discount field, the Discount Price field will automatically update with the new price.
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