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WPF - VISUAL C# EXERCISES
Exercise: Create a ListBox with DataTemplates for playing cards
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The answer to the exercise will be included and explained if you attend the Wise Owl course listed below!
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Open the window in the above folder, and make it the default window for your application. When you run the application, you should see a combo box:
A basic combo box bound to the SuitName property of the underlying class. Take a peek at the code-behind to see that the underlying class exposes two public properties: SuitName and ImageName.
Change your combobox into a listbox (this should take seconds - they work the same way), then add a data template section to the listbox:
The start of the data template.
Within this data template for how the listbox appears, add:
- A label with content bound to the SuitName of the underlying class; and
- An image with image source bound to the ImageUrl property of the underlying class.
Here's a suggestion for how your listbox could look:
You should be able to select any suit.
Now attach an event to the MouseDoubleClick event of the ListBox, and in this event:
- create a variable lb of type ListBox which coverts the sender to a ListBox;
- convert the SelectedItem in this listbox into the underlying clsSuit object;
- Display the SuitName property of this suit.
Here is suggested code to do this!
private void lstSuit_MouseDoubleClick(object sender,
// get at the listbox just double-clicked on
ListBox lb = (ListBox)sender;
// show its suit
clsSuit suit = (clsSuit)lb.SelectedItem;
When you double-click on a suit, you should see a message as shown on the next page.
Here's the sort of message which you should get when you double-click on a suit:
|Double-click on a suit ...||... to see its name!|
Reflecting on just how powerful WPF is (and just how time-consuming it can be) close down any windows you have open.