c# list find all elements code example

Example 1: c# find element in list of list

var element = (from sublist in userList
               from item in sublist
               where item.uniqueidentifier == someid
               select item).FirstOrDefault();

Example 2: c# get all elements from list

You could get the Customers like this:

using System.Linq;

collectionCarts.SelectMany(c => c.OrderList.Select(o => o.Customer));