Exercise: Use lists and structures to create a shopping list program

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The answer to the exercise will be included and explained if you attend the Wise Owl course listed below!

Category ==> Visual C Sharp 2010  (65 exercises)
Topic ==> Data structures  (4 exercises)
Level ==> Average difficulty
Course ==> Adv C# | Classes & LINQ
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In a new or existing project, create a new form called frmWaitrose (Wise Owl is a classy company - none of your Aldi or Lidl food ...!).

Open the file called frmWaitrose .Designer.cs.  Replace the entire code with the contents of the text file in the above folder, then change:

  • the namespace in the first line to the name of your project; and
  • the form name to frmWaitrose.

When you've amended Program.cs accordingly, you should now be able to run this application:

Shopping list form

The return of the shopping list application ...

Create a structure called ShoppingListItem to hold each shopping list item, with 3 write-only fields and a read-only property called Description.

Create a private variable in your form to hold a list of ShoppingListItem structures.

Attach code to the Add item button so that each time you choose to add an item, Visual Studio:

  • adds a new ShoppingListItem structure to your ShoppingList list, then
  • loops over the items in this list to compile the text to display in the right-hand list:
List with 4 items

Just after adding a fourth item to our list.

When you're satisfied your system is working, close everything down!

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