Visual Basic | Using arrays exercise | Build up an array of items typed into a form

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.

Software ==> Visual Basic  (46 exercises)
Version ==> Any version of VB
Topic ==> Using arrays  (2 exercises)
Level ==> Average difficulty
Subject ==> Visual Basic training
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).

You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.

Press CTRL + D to add the file called frmGetNames.vb from the above folder into your project (or right click on the project and choose to add it as an existing item). 

Change your project's properties to make this the default form for your project.  When you run your project, you should see this:

Form for entering names

After typing a name into the box, a user should be able to click on the button to add the name to an array.


A good start would be to create the following constant, variable and array at the top of your form's code-behind:

'the number of names allowed

Const maxNumber As Integer = 5

'the current number

Dim currentNumber As Integer = 0

'array of all of the names

Dim applicants(maxNumber) As String

Now write code so that when a user clicks on the Apply button your system adds the relevant person's name into the applicants array, and displays a message showing the names added to date.  For example, here's what you might see after adding 3 names:

Message box listing names

Don't forget to add a check that you haven't exceeded the maximum allowed number of applicants (as set in the maxNumber constant).


Keep adding names to check that you can't exceed the maximum number given in maxNumber, then close your application and forms down. 

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
This page has 0 threads Add post