Visual C# | Writing LINQ exercise | Use LINQ to iterate over Doctor Who candidate names

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

Software ==> Visual C#  (79 exercises)
Version ==> Any version of C#
Topic ==> Writing LINQ  (2 exercises)
Level ==> Relatively easy
Course ==> Intermediate C#
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In a new or existing project, add the existing form from the folder shown above.  Make this the default form, so that this is what you see when you run your application:

Next Doctor Who

Who'll be next? You can decide on the short-list.

Add code to the button so that it creates a string array of candidates (yours can be different!):

// create array of candidates

string[] candidates = { "Jeremy Corbyn", "Sooty",

"Boris Johnson", "Adam Ant",

"Simon Cowell", "Oliver Owl" };

Add LINQ code to create a query expression to enumerate these names in alphabetical order, then show these names in the listbox using code like this:

// add these to the listbox

lstCandidates.DataSource = DoctorWhoCandidates.ToList();

A listbox won't accept an IEnumerable collection as its data source, so that's why you need to cast the results to a list.  But you knew that, didn't you?

Test that when you click on the button, the names appear in the listbox!

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