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Software ==>	Excel VBA Macros (52 exercises)
Topic ==>	Debugging and error handling (1 exercise)
Level ==>	Relatively easy
Subject ==>	VBA training

Use the On Error statement in a VBA procedure to prevent users entering an invalid date into an input box.

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

Before you can do this exercise, you'll need to download and unzip this file .

Open the file called WODA Application.xlsm and click the button on Sheet1 to apply to the Wise Owl Dating Agency. Take care to enter a valid date in the second input box.

Valid date in box

If you enter an invalid date into this input box, you'll encounter a run-time error.

Find the subroutine called AddDetailsToList and identify this line of code:

YourDoB = InputBox("Enter your date of birth")

Add an On Error statement above this line which redirects the code to a separate section of the subroutine when a user tries to type in an invalid date.

Don't forget to disable your error-handler after this line using the On Error GoTo 0 statement.

Create an error-handling section at the bottom of the subroutine which displays a message to the user and then ends the procedure.

Invalid date message

Your message could look similar to this one. Don't forget to add an Exit Sub statement just before the error-handling section.

Test the system works then save and close the file.

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.

You can find other training resources for the subject of this exercise here:

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