Linq list of lists to single list
c#, linq
Solution
You want to use the `SelectMany` extension method.
var residences = details.SelectMany(d => d.AppForm_Residences).ToList();
Problem
Seems like this is the kind of thing that would have already been answered but I'm unable to find it. My question is pretty simple, how can I do this in one statement so that instead of having to new the empty list and then aggregate in the next line, that I can have a single linq statement that outputs my final list. details is a list of items that each contain a list of residences, I just want all of the residences in a flat list. ``` var residences = new List<DAL.AppForm_Residences>(); details.Select(d => d.AppForm_Residences).ToList().ForEach(d => residences.AddRange(d)); ```