WISE OWL EXERCISES
VISUAL BASIC EXERCISES
VISUAL BASIC EXERCISES
- Drawing forms (2)
- Form events (1)
- Variables and data types (2)
- Enumerations and constants (2)
- Form validation (3)
- Menus and toolbars (2)
- Files and folders (1)
- Basic DataGridViews (1)
- Reacting to DataGridView events (3)
- Advanced DataGridViews (2)
- Creating classes (4)
- Coding in VB.NET (2)
- Variables and constants (3)
- Testing conditions (2)
- Passing arguments (3)
- Using arrays (2)
- Loops (2)
- Working with files (3)
- Lists (3)
- Creating properties (3)
Visual Basic | Using arrays exercise | Build up an array of items typed into a form
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You can learn how to do this exercise on the relevant Wise Owl classroom training course (sadly for the moment only in the UK).
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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:
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:
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.