Exercise: Create a prioritised to-do list using a dictionary

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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 ==> Relatively easy
Course ==> Adv C# | Classes & LINQ
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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:

The to-do form

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:

The final task list

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.

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