Exercise: Use variables to show the length of a phrase

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 one of more of the courses listed below!

Category ==> Visual C Sharp 2010  (65 exercises)
Topic ==> C# variables  (4 exercises)
Level ==> Relatively easy
Courses ==> Introduction to Visual C#  /  WinForms using 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).

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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 frmWordLength.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:

Showing length of phrases

The idea is to attach code to the two buttons so that they do what they say they will!


Attach code to the button on the left so that it creates two variables:

Variable Type Will hold
phrase string The text typed into the box
phraseLength int The number of characters in the phrase

Get the button to display two messages in succession:

The message Number of characters
The first message The second message

Use Length to show the length of your text.  Note that this is a property, not a method, and so doesn't need any brackets after it.

Use Replace to replace every space in the phrase with an empty string ("") to get the second button to work:

The second button message

Clicking on the second button should display this message for the text typed in here.


You get bonus points for using the Trim() method to remove any leading or trailing spaces from your text before finding out how long it is!

Close down any files that you have open.  The preceding sentence had 40 characters in, if you're interested!

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