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)
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- Looping (2)
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- Properties in C# (3)
- Using lists (3)
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- 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 (4)
- The form as a class (1)
- Data structures (6)
- Inheritance (5)
- Interfaces (2)
- Delegates and events (2)
- Writing LINQ (2)
- Advanced LINQ (2)
- Entity Frameworks (1)
- LINQ with Entity Frameworks (4)
- Grouping using LINQ (2)
- LINQ to SQL (2)
Visual C# | Data structures exercise | Create a prioritised to-do list using a dictionary
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In a new or existing project, create a new from called frmToDo.
Open the file called frmToDo.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.
When you've amended Program.cs accordingly, you should now be able to run this application:
You can type in anything you need to remember to do, and assign a date to it.
Create a private dictionary variable for the form with:
- the key equal to the to do date; and
- the value equal to the text description of the task.
Attach code to the add button so that you can add tasks to the dictionary. Attach code to the display button to list out these tasks:
Because you created a sorted dictionary object, the tasks will automatically appear sorted by the key (ie by the to-do date).
Note that you'll only be able to add one task on any given day, because you can't have duplicate key values in a dictionary.
Close down your application and any open files.