LINQ join into

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 static void QueryAnimalData()
        {
            Animal[] animals = new[]
            {
                new Animal{Name = "German Shepherd",
                Height = 25,
                Weight = 77,
                AnimalID = 1},
                new Animal{Name = "Chihuahua",
                Height = 7,
                Weight = 4.4,
                AnimalID = 2},
                new Animal{Name = "Saint Bernard",
                Height = 30,
                Weight = 200,
                AnimalID = 3},
                new Animal{Name = "Pug",
                Height = 12,
                Weight = 16,
                AnimalID = 1},
                new Animal{Name = "Beagle",
                Height = 15,
                Weight = 23,
                AnimalID = 2}
            };

            Owner[] owners = new[]
            {
                new Owner{Name = "Doug Parks",
                OwnerID = 1},
                new Owner{Name = "Sally Smith",
                OwnerID = 2},
                new Owner{Name = "Paul Brooks",
                OwnerID = 3},
                 new Owner{Name = "Jamie Brooks",
                OwnerID = 4}
            };

            // Remove name and height
            var nameHeight = from a in animals
                             select new
                             {
                                 a.Name,
                                 a.Height
                             };

            // Convert to an object array
            Array arrNameHeight = nameHeight.ToArray();

            foreach (var i in arrNameHeight)
            {
                Console.WriteLine(i.ToString());
            }
            Console.WriteLine();

            // Create an inner join
            // Join info in owners and animals using
            // equal values for IDs
            // Store values for animal and owner
            var innerJoin =
               from animal in animals
               join owner in owners on animal.AnimalID
               equals owner.OwnerID
               select new { OwnerName = owner.Name, AnimalName = animal.Name };

            foreach (var i in innerJoin)
            {
                Console.WriteLine("{0} owns {1}",
                    i.OwnerName, i.AnimalName);
            }

            Console.WriteLine();

            // Create a group inner join
            // Get all animals and put them in a
            // newly created owner group if their
            // IDs match the owners ID 
            //var groupJoin =
            //    from owner in owners
            //    orderby owner.OwnerID
            //    join animal in animals on owner.OwnerID
            //    equals animal.AnimalID 
            //    into ownerGroup
            //    select new
            //    {
            //        Owner = owner.Name,
            //        Animals = from owner2 in ownerGroup
            //                  orderby owner2.Name
            //                  select owner2
            //    };

            var groupJoin =
               from owner in owners
               orderby owner.OwnerID
               join animal in animals on owner.OwnerID
               equals animal.AnimalID
               into ownerGroup
               select new
               {
                   Owner = owner.Name,
                   Animals = ownerGroup
               };
            int totalAnimals = 0;

            foreach (var ownerGroup in groupJoin)
            {
                Console.WriteLine(ownerGroup.Owner);
                foreach (var animal in ownerGroup.Animals)
                {
                    totalAnimals++;
                    Console.WriteLine("* {0}", animal.Name);
                }
            }
        }