如何在 asp.net api 响应中包含嵌套列表

Question

我正在使用嵌套列表（List inside List）一切正常，但是当我尝试从 Api (GetOrders) 获得响应时，它没有显示列表。我尝试 .include(x=>x.ShopOrdersList) 但它只包括“ShopOrdersList”，而“ShopOrdersList”内的第二个列表“OrderSummaries”未显示。 我的模型是follow

 public class Orders
{
    [Key]
    public int InvoiceNumber { get; set; }
    public int ShopId { get; set; }
    public string ShopName { get; set; }
    public string Address { get; set; }
    public string OwnerName { get; set; }
    public string OwnerCnic { get; set; }
    public string Area { get; set; }

    public string PhoneNumber { get; set; }
    public int TotalSale { get; set; }
    public int TotalProfit { get; set; }
    public int TotalRecover { get; set; }
    public List<ShopOrder> ShopOrdersList { get; set; }
}
public class ShopOrder
{
    [Key]
    public int ShopOrderId { get; set; }
    public DateTime BookingDate { get; set; }
    public DateTime DeliveryDate { get; set; }
    public string OrderBooker { get; set; }
    public string DeliveryMan { get; set; }
    public byte[] Signature { get; set; }
    public int TotalQuantity { get; set; }
    public bool IsDelivered { get; set; }
    public bool IsAccepted { get; set; }
    public bool IsPaymentAdded { get; set; }
    public int TotalProfit { get; set; }
    public int TotalPrice { get; set; }
    public string UserId { get; set; }
    public List<OrderSummary> OrderSummaries { get; set; }
}
public class OrderSummary
{
    [Key]
    public int OrderSummaryId { get; set; }
    public int ProductId { get; set; }
    public string ProductName { get; set; }
    public string Detail { get; set; }
    public int Price { get; set; }
    public byte[] Image { get; set; }
    public int PcsInCtn { get; set; }
    public int OnePcsPurchasePrice { get; set; }
    public int Ctns { get; set; }
    public int Quantity { get; set; }
    public int TotalPrice { get; set; }
}

控制器代码为

// GET: api/Orders
    public IQueryable<Orders> GetOrders()
    {
        return db.Orders.Include(x => x.ShopOrdersList);
    }

这是我收到的回复。 现在我想包括“OrderSummaries”列表。提前致谢。

Answer 1

检查这个答案EF LINQ include multiple and nested entities 它说你可以调用 ThenInclude 添加嵌套条目

 public IQueryable<Orders> GetOrders()
    {
        return db.Orders.Include(x => x.ShopOrdersList).ThenInclude(y=>y.OrderSummaries);
    }