ProjectLib/ProjectLibrary/Entites/Book_Orders.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ProjectLibrary.Entites
{
    public class Book_Orders
    {
        public int BookID { get; private set; }
        public int OrderID { get; private set; }

        public static Book_Orders CreateEntity(int bookID, int orderID)
        {
            return new Book_Orders
            {
                BookID = bookID,
                OrderID = orderID
            };
        }
    }
}