How to query a nested list using a lambda expression

Question

In my repository implementation I can run the following query using a lambda expression:

public IList GetUsersFromCountry(string)
{
    return _UserR         


        

Answer 1

Here's one way to do it:

var clubs = clubRepository
    .SelectMany(c => c.Memberships, (c, m) => new { c, m })
    .Where(x => x.m.User.Age > 45)
    .Select(x => x.c);