WISE OWL EXERCISES
WPF - VISUAL C# EXERCISES
WPF - Visual C# | Handling events exercise | Creating WPF calculator using C# coding for the buttons
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Create a form allowing you to add, subtract, divide and multiply numbers:
You can type in any two numbers, and click on a button to add, subtract, divide or multiply them.
Notes on how to proceed to do this are shown below!
Having created your window, first attach code to the buttons so that if you leave one of the numbers blank (or enter an invalid number) you get an error message:
Here we've missed out the second number - your code should set the focus to the second text box.
If, on the other hand, you enter valid numbers, you should see the answer appear in a label at the bottom of the window (set its Visibility property in XAML to Collapsed, then set it to Visiibility.Visible in code):
Here we've clicked on the divide button - you should show the answer using the number format:
When everything is working to your satisfaction, close the window down (you might like to have a look at the answer provided too, to see how it compares to yours).