Visual Basic | Form validation exercise | Create a form with ErrorProvider controls

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.

The answer to the exercise will be included and explained if you attend the relevant Wise Owl course (sadly, only in the UK for now).

Software ==> Visual Basic  (46 exercises)
Version ==> Any version of VB
Topic ==> Form validation  (3 exercises)
Level ==> Average difficulty
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help).

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Add the frmNewHeart form in the folder above into your project (or work with a copy you already have).

Add an ErrorProvider control to your form, and rename this as errTypical.

Code the Validating event of the name and age text boxes so that:

  • you see an error next to the name if it has been left blank; and
  • you see an error next to the age if it is blank, or not an integer

Test out your ErrorProvider control - here's what you should see if you leave the age blank:

Visual Basic 2010 exercise - Form validation (image 1)

A lady like this never reveals her age

Test our application, then close down its forms.

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