ObjectDumperSample.cs

namespace ObjectDumpTest
{
    public class SomeCollections
    {
        public int[] SomeArray { get; set; } = new[] { 0, 1, 2, 3, 4 };
        public List<int> SomeList { get; set; } = new List<int> { 0, 1, 2, 3, 4 };
        public Dictionary<string, int> SomeLDictionary { get; set; } = new Dictionary<string, int>() { { "One", 1 }, { "Two", 2 } };
        public IEnumerable<int> SomeEnumerable { get { return SomeList; } }
        public IEnumerable<int> SomeLazyEnumerable { get { return LazyNumber(); } }

        private IEnumerable<int> LazyNumber()
        {
            for (int i = 0; i < 5; i++)
            {
                // Some Heavy Process
                Thread.Sleep(500);
                yield return i;
            }
        }
    }

    public class Human
    {
        public int Age { get; set; }
        public string Name { get; set; }
        public SomeCollections SomeCollections { get; set; } = new SomeCollections();
    }

    public class BookElement
    {
        public Human Human { get; set; }
        public DateTime Date { get; set; } = DateTime.Now;
    }

    class Program
    {
        static void Main(string[] args)
        {
            var bookList = new List<BookElement>
            {
                new BookElement { Human =  new Human { Name = "John", Age = 20, } } ,
                new BookElement { Human =  new Human { Name = "Alice", Age = 10, } } ,
            };

            var dumpData = ObjectDumper.Dump(bookList);

            Console.WriteLine(dumpData);
            Console.ReadLine();
        }
    }
}

result.txt

{ObjectDumpTest.BookElement}
  Human: { }
    {ObjectDumpTest.Human}
      Age: 20
      Name: "John"
      SomeCollections: { }
        {ObjectDumpTest.SomeCollections}
          SomeArray: ...
            0
            1
            2
            3
            4
          SomeList: ...
            0
            1
            2
            3
            4
          SomeLDictionary: ...
            [One, 1]
            [Two, 2]
          SomeEnumerable: ...
            0
            1
            2
            3
            4
          SomeLazyEnumerable: ...
            0
            1
            2
            3
            4
  Date: 2018/12/31 15:36:47

{ObjectDumpTest.BookElement}
  Human: { }
    {ObjectDumpTest.Human}
      Age: 10
      Name: "Alice"
      SomeCollections: { }
        {ObjectDumpTest.SomeCollections}
          SomeArray: ...
            0
            1
            2
            3
            4
          SomeList: ...
            0
            1
            2
            3
            4
          SomeLDictionary: ...
            [One, 1]
            [Two, 2]
          SomeEnumerable: ...
            0
            1
            2
            3
            4
          SomeLazyEnumerable: ...
            0
            1
            2
            3
            4
  Date: 2018/12/31 15:36:47