Find all items in all sublist in

Question

I've an object list with a property that is sublist (object list)

public class Class2
{
    public String Item1 { get; set; }
    public int Item2 { get; set; }
}

public class Class1
{
    public String ItemA { get; set; }
    public List<Class2> Classes2 { get; set; }
}

List<Class1> classes1 = new List<Class1> ();

I would like to find all existing Class2.Item1 in classes1. Is it possible in linq c# ? thks

Maybe with [`SelectMany`](https://stackoverflow.com/q/958949/107625)? — Uwe Keim, Jun 22 '17 at 14:51
I'm voting to close this question as off-topic because "gimme teh codez." — EJoshuaS - Stand with Ukraine, Jun 22 '17 at 16:31
sorry, what does that mean "gimme teh codez" (I'm french and don't anderstand) thks — Babe59, Jun 23 '17 at 16:19

score 2 · Accepted Answer · answered Jun 22 '17 at 14:52

2

All distinct? However, you can use SelectMany:

var allDistinctItem1 = classes1.SelectMany(x => x.Classes2.Select(y => y.Item1)).Distinct();

answered Jun 22 '17 at 14:52

Tim Schmelter

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Find all items in all sublist in

1 Answers1