BeforeUpdate & AfterUpdate in Access: Conflict Check

In this Microsoft Access tutorial I will show you how to use the BeforeUpdate and AfterUpdate events together to prevent double-booking appointments, validate user input for valid dates and times, and prompt for sending a confirmation email after an appointment is added. We will build a simple appointment form, check for date conflicts, and add useful validation to make sure appointments are entered correctly.

Bryce from Mesa, Arizona (a Platinum Member) asks: I have a form where I schedule appointments, and I only book them on the hour, like 10am or 3pm. Is there an easy way to check if I already have something scheduled at that time so I don't double-book? Also, after I enter the appointment, can Access prompt me to send a confirmation email? I keep forgetting to do that, and it would really help if the system reminded me automatically.

Members

There is no extended cut, but here is the file download:

•  File Download - Gold Members

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Prerequisites

• Intro to VBA
• Before Update
• AfterUpdate
• DLookup
• NZ Function
• If Then
• MsgBox

Links

• Appointments
• Send Email with CDO
• Send Email

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Keywords

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