Question

I have a data with multiple lines that are similar. They are latest results in games and for example if there are 3 goals that are scored in the game, that would mean 3 lines.

I want to distinct one game one line. But the distinct lines have to be the newest (firstOrDefault?)

I do want to show both status=Confirmed and status=Open but obviously i don´t want to show the same game both “Confirmed” and “Open”

So i want to group by both columns “Hometeam” and “outteam”. But for same game I would get 3 lines if there were 3 goals but i want the “newest line”.

Could someone help me with this?

Answer 1

You could try something like this:

data.GroupBy(d => new { Hometeam = d.Hometeam, Outteam = d.Outteam })
    .Select(g => g.OrderBy(d => d.Status)
                  .ThenByDescending(d => d.GoalsHometeams + d.GoalsOutteams)
                  .First())

1. Groups by the team combinations
2. For each group, finds the entry with the newest status (Confirmed comes before Open in alphabetical order)
3. If multiple with same status (i.e., multiple Open), finds entry with highest combined score.
4. Grabs the first result (which should be newest) per group.

Demo: http://ideone.com/vlCtw

Sample Result:

Current game status results:
Confirmed, Fylkir, Valur, 3, 1
Confirmed, Selfoss, Grindavik, 3, 3
Confirmed, Keflavik, IBV, 1, 0
Confirmed, Stjarnan, IA, 1, 1
Confirmed, Breioablik, Fram, 0, 2