Visual C# | Arrays exercise | Add items typed into a form into an array, then list this out

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 course listed below!

Software ==> Visual C#  (79 exercises)
Version ==> Any version of C#
Topic ==> Arrays  (2 exercises)
Level ==> Average difficulty
Course ==> Introduction to Visual C#
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.

To avoid having to draw the form needed for this exercise, right-click on the name of your project in Solution Explorer then choose Add --> Existing Item... (you can also press SHIFT + ALT + A to do the same thing).

Choose only the file called frmGetNames.cs in the above folder to import it into your project, then edit Program.cs to make this the default form.  When you run your application, you should now see this:

Form for entering names

The idea is that you should type in each applicant's name, then click on the button to add this into an underlying array.

 

You may find it useful first to create the following constant, variable and array in your code-behind (but not within any particular procedure):

// the number of names allowed

const int maxNumber = 5;

 

// the current number

int currentNumber = 0;

 

// array of all of the names

string[] applicants = new string[maxNumber];

Now arrange it so that when you click on the Apply button your code:

  1. Checks whether the maximum number of names has been reached (and displays a message if this is the case).
  2. Otherwise, adds the name to the array in the next blank position.
  3. Displays a message listing all of the members of the array added so far.

For example, after adding your first 3 names you might see a message like this when you click on the button:

Message box listing names

The message you might see after adding your first 3 names.

 

Check that you can't exceed the maximum number of names, then close down your form.

This page has 0 threads Add post