Stimulsoft.Report.StiReport stiReport = new Stimulsoft.Report.StiReport();
stiReport.Load("Reports//YourReportName.mrt");

stiReport.RegBusinessObject("Name1", List1);
stiReport.RegBusinessObject("Name2", List2);
stiReport.RegBusinessObject("Name3", List3);

DataSet ds = new DataSet();
ds.Tables.Add(YourDataTable);
stiReport.RegData(ds);

stiReport.Dictionary.Variables["Today"].Value = DateTime.Now.ToShortDateString();

stiReport.Design();

stiReport.Compile();
stiReport.Render();
stiViewer.Report = stiReport;
stiViewer.Show();

    public class Book
    {
        public string Title { get; set; }
        public int Id { get; set; }
        public Author Author { get; set; }
        public Publisher Publisher { get; set; }

        public IList<Book> GetBooks()
        {
            var books = new List<Book>();

            for (int i = 0; i < 10; i++)
            {
                var book = new Book()
                {
                    Id = i,
                    Title = $"Title {i}",
                    Author = new Author()
                    {
                        FirstName = $"Author {i} First Name",
                        LastName = $"Author {i} Last Name",
                        Person = new Person()
                        {
                            Type = $"Type {i}",
                            Value = $"Value {i}"
                        }
                    },
                    Publisher = new Report.Publisher()
                    {
                        Name = $"Publiser {i}"
                    }
                };
                books.Add(book);
            }
            return books;
        }
    }

    public class Author
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public Person Person { get; set; }
    }

    public class Person
    {
        public string Type { get; set; }
        public string Value { get; set; }
    }

    public class Publisher
    {
        public string Name { get; set; }
    }

و صفحه محصولات: