How do you sort a list by an element inside the object the list uses?

Question

I am working on a piece of coursework and part of this involves me having to have a working scoreboard in my game, however, I need a way to sort my list of the Score object by score.score. As my Score object contains the players name and also the level they reached.

I am not very experienced in programming and have been doing it for less than a year, all I've found from searching is people talking about lambda or IComparable, both of which I don't know anything about or how to use and MSDN doesn't seem to make it easy to understand for me :(

I'm pulling my hair out here, any help would be great!

In pseudo all I need is:

List<Score> scores;
// Load in scores
scores.Sort(//sort by score.actualScore)

So that I can add to and remove from the list in the correct places when a new score is added.

Answer 1

var ordered = scores.OrderBy(x => x.ActualScore).ToList();

Or:

var ordered = scores.OrderByDescending(x => x.ActualScore).ToList();

Answer 2

The simplest way would be to pass it a Comparison delegate. For your example, that would be:

scores.Sort((a, b) => a.actualScore - b.actualScore);