EnumerableVisualizer

var list1 = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9 };

var list2 = new List<string> { "Vaso", "Lena", "Helean", "Eva", "Viktoria", "Ada", "Lucia" };

var list3 = new List<Person>
{
    new Person("Vaso", 40, new Car("VW", 2017, DateTime.Now)),
    new Person("Lena", 45, new Car("Skoda", 300, DateTime.Now.AddDays(-5))),
    new Person("Phu", 20, new Car("Skoda", 3000, DateTime.Now.AddDays(-5))),
    new Person("John", 45, new Car("Skoda Subaru", 300, DateTime.Now.AddDays(-5))),
    new Person("Bob", 20, new Car("Skoda 23", 300, DateTime.Now.AddDays(-5)))
};

var list31 = new List<Person>
{
    new Person("Vaso", 40, new Car("VW", 2017, DateTime.Now, new Gadget("Phone"))),
    new Person("Lena", 45, new Car("Skoda", 300, DateTime.Now.AddDays(-5), new Gadget("Phone"))),
    new Person("Phu", 20, new Car("Skoda", 3000, DateTime.Now.AddDays(-5), new Gadget("Tv"))),
    new Person("John", 45, new Car("Skoda Subaru", 300, DateTime.Now.AddDays(-5), new Gadget("Phone"))),
    new Person("Bob", 20, new Car("Skoda 23", 300, DateTime.Now.AddDays(-5), new Gadget("Radio")))
};

var list4 = new List<Car>
{
    new Car("VW", 80),
    new Car("Skoda", 300, DateTime.Now.AddDays(0)),
    new Car("VW 2", 2018, DateTime.Now.AddDays(-10)),
    new Car("B Skoda", 300, DateTime.Now.AddDays(30)),
    new Car("8080 2018", 300, DateTime.Now.AddDays(-500))
};

var list5 = new[]
{
    new Person("Vaso", 40, new Car("VW", 80, DateTime.Now)),
    new Person("Sandy", 23, new Car("Porsche", 300, DateTime.Now.AddDays(-5)))
};

var list6 = new[]
{
    new Person("Vaso", 40, null),
    new Person("Sandy", 23, new Car("Porsche", 300, DateTime.Now.AddDays(-5)))
};

var list7 = new[]
{
    new Person { Name = "Vaso"},
    new Person()
};

var list8 = new[]
{
    new Gadget("Phone"),
    new Gadget("Radio"),
    new Gadget(""),
    new Gadget("Self Drive"),
    new Gadget("Tv")
};

var list9 = new[]
{
    new Car(new Gadget("Phone")),
    new Car(new Gadget("Radio")),
    new Car(new Gadget("")),
    new Car(new Gadget("Self Drive")),
    new Car(new Gadget("Tv"))
};