Visual C# | Properties in C# exercise | Calculate BMI using properties throughout

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 C#  (79 exercises)
Version ==> Any version of C#
Topic ==> Properties in C#  (3 exercises)
Level ==> Average difficulty
Subject ==> C# 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).

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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 frmBMI.cs in the above folder to import it into your project (you may have to choose to overwrite existing files at this stage), then edit Program.cs to make this the default form. 

Attach code to the button to calculate your body mass index (BMI) so that it looks like this:

private void btnShowBmi_Click(object sender, EventArgs e)


// call function to show result

MessageBox.Show("Your BMI is " + BMI.ToString("0.00"));


double BMI {

get {

return weight / (height * height);



Of course, there are a few other properties (not shown here) that you'll need to write to get this to work ...

Here's what you should see when you run your system:

Form for BMI details Resulting BMI message
Type in your details ... ... to show your BMI

Close down the application and any open forms.

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