LINQ - Inner Join, C#

Language: Layout:

using System;
using System.Collections.Generic;
using System.Linq;

namespace Rextester
{
    public class Order 
    {
        public int Id { get; set; }
        public string Name { get; set; }
    } 
    
    public class OrderAddress
    {
        public int Id { get; set; }
        public int OrderId { get; set; }
        public string Name { get; set; }
    }
    
    public class Program
    {
        public static void Main(string[] args)
        {
            var orders = new List<Order> { new Order { Id = 1, Name = "Large T Shirt" }};
            
            var orderAddresses = new List<OrderAddress> { new OrderAddress { Id = 1, Name = "40 New York Street", OrderId = 1 }};
            
            var ordersWithAddresses = orders.Join(orderAddresses, order => order.Id, address => address.OrderId, (order,address) => new { Order = order, Address = address});
            
            foreach(var o in ordersWithAddresses) 
            {
                Console.WriteLine("{0} {1}", o.Order.Name, o.Address.Name);
            }            
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0.09 sec, absolute running time: 0.11 sec, cpu time: 0.11 sec, average memory usage: 17 Mb, average nr of threads: 5