WPF - Visual C# | Handling events exercise | Create a 2-dimensional grid form, and code order button

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The answer to the exercise will be included and explained if you attend the relevant Wise Owl course (sadly, only in the UK for now).

Software ==> WPF - Visual C#  (20 exercises)
Version ==> Any version of WPF
Topic ==> Handling events  (3 exercises)
Level ==> Average difficulty

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Create a window allowing users of your application to order a drink.  Depending on your energy levels, this could look simple or fancy:

Basic version of form Advanced version of form
The vanilla version The deluxe version

Both the examples above consist of a vertical stack panel containing a grid followed by a centrally aligned button.  The grid has 2 columns and either 2 or 4 rows, depending on which version you go for.

Attach code to your Place order button so that it displays what you've ordered (for the moment, ignore the sugars):

Order button results

When you click on the Place order button, you should see the drink that you've ordered.


Add a variable to hold the number of sugars ordered, to get a more complete message:

Order with sugars too

Display the name of the drink and the number of sugars ordered.


Finally, if you have time, add validation so that you get error messages if you leave the drink name blank or enter an invalid number of sugars:

No drinks ordered message No sugars specified message
Error if no drink name  Error if sugars invalid

Test that your application works, then close it down. 

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