var khodrosaz = new List()
            {
                new Khodeosaz
                { Id= 1,Name="Ikco"},
                                new Khodeosaz
                { Id= 2,Name="Saypa"}

            };
var cars = new List
            {
                new Car
                {
                    Name = "Prid",
                    Khodeosaz = 2
                },
                    new Car
                {
                    Name = "Peykan",
                    Khodeosaz = 1
                },
            };


            var join = cars.Join(khodrosaz, c => c.Khodeosaz, k =>  k.Id, (c, k) => new { c,k } );