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LINQ - Contains in?

private ObservableCollection<User> userCollection = someData;

 

public class User

{

    public string Username { get; set; }

    public ObservableCollection<Department> Memberships { get; set; }

}

 

public class Department

{

    public string Name { get; set; }

}

 

//I can't use "Contains", because it requires an object of type "Department", but I don't have the object, just the string "Name" (in this case "MyDepartment")

var result = from usr in userCollection where (usr.Memberships.Contains("MyDepartment")) select usr;

       

(from usr in userCollection select usr).

               Any(x=>x.Username.Contains("MyDepartment"))

       

var result = from usr in userCollection

             where usr.Memberships.Any(m => m.Name == "MyDepartment")

             select usr;

       

var result = from usr in userCollection where (usr.Memberships.Select(m=>m.Name).Contains("MyDepartment")) select usr;