using DTO; public sealed class OrderModel { public long OrderId { get; set; } public string OrderDescription { get; set; } public long CustomerId { get; set; } public double TotalPrice { get; set; } public OrderModel(OrderDto orderDTO) { OrderId = orderDTO.OrderId; OrderDescription = orderDTO.Description.Trim(); CustomerId = orderDTO.CustomerId; TotalPrice = orderDTO.Products.Select(product => product.Price).Sum(); } }