Linq: select First Items from the Child list?

Question

I have the following one-to-many relationship between two objects.

Parent --> IList<Child> 

Now I have a List of Parents , and I want the first child of each parent in the list.

What is the best way to do this with Linq?

Answer 1

 parents.Where(p => p.Children.Any()).Select(p => p.Children.First()); 

Answer 2

You can iterate through each "parent" and find the first of its descendants:

 parent.FirstOrDefault(child => parent.Children.First()); 

Answer 3

parent.child.FirstOrDefault ();