WISE OWL EXERCISES
VISUAL C# EXERCISES
- Creating forms (4)
- Coding form events (1)
- Laying out your code (2)
- C# variables (4)
- Enumerations and constants (2)
- Conditions (2)
- Modular code (3)
- Arrays (2)
- Looping (2)
- Files and folders (3)
- Properties in C# (3)
- Using lists (3)
- Validating forms (6)
- Toolbars, menus and status bars (1)
- FileDialogs and StreamReaders (1)
- Debugging and trapping errors (1)
- Introduction to DataGridViews (1)
- DataGridView events (3)
- Complex DataGridViews (2)
- Creating classes (2)
- The form as a class (1)
- Data structures (4)
- Inheritance (4)
- Interfaces (2)
- Delegates and events (2)
- Writing LINQ (1)
- Advanced LINQ (3)
- LINQ to SQL models (1)
- Writing LINQ to SQL (2)
- Grouping using LINQ (2)
Visual C# | Data structures exercise | Use lists and structures to create a shopping list program
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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:
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:
Just after adding a fourth item to our list.
When you're satisfied your system is working, close everything down!