3rdpartylibs/fastreports.wpf/Demos/WPF/DataSources/BusinessObject.cs

using System.Collections.Generic;

namespace DataSources
{
    public class Category
    {
        public string Name { get; }

        public string Description { get; }

        public List<Product> Products { get; }

        public Category(string name, string description)
        {
            Name = name;
            Description = description;
            Products = new List<Product>();
        }
    }

    public class Product
    {
        public string Name { get; }

        public decimal UnitPrice { get; }

        public Product(string name, decimal unitPrice)
        {
            Name = name;
            UnitPrice = unitPrice;
        }
    }
}