C# 从IQueryable类型的嵌套DTO访问子属性<；T>；

使用.NET Core 3.1和EF Core 3.1

考虑到这3个嵌套DTO：

public class AdminImmoOrderDto
{
    public IQueryable<AdminImmoOrderProductDto> OrderProducts { get; set; }
    public bool IsCompleted { get; set; }
}

public class AdminImmoOrderProductDto
{
    public IQueryable<AdminImmoOrderProductFileDto> OrderFiles { get; set; }
    public bool IsCompleted { get; set; }
}

public class AdminImmoOrderProductFileDto
{
    public string FileName { get; set; }
    public string FileUrl { get; set; }
}

引发以下EF核心异常

.All(od => od.IsCompleted == True)' by 'NavigationExpandingExpressionVisitor' failed.
This may indicate either a bug or a limitation in EF Core.
See https://go.microsoft.com/fwlink/?linkid=2101433 for more detailed information.

而且，您可以看到链接指的是客户端与服务器的评估

此属性IsCompleted用于以后筛选我的订单。我尝试在我的过滤器中移动这段代码，但没有成功。我还尝试在映射DTO之前执行此逻辑，使用linq代码块而不是子DTO中的属性（因为在映射完成之前它不存在）

我还尝试在调用.All（）之前通过调用.ToList（）或.AsEnumerable（）显式强制客户机求值

我的问题是：如何根据OrderProductDto的子Dto中的IsCompleted属性设置OrderDto的IsCompleted属性，而不展平顶级IQueryable

谢谢你

更新10/03

我已尝试将其移动到我的筛选器查询对象，如果我可以按顺序筛选的子对象，则不需要该属性。遗憾的是，错误仍然是一样的。请参阅下面的代码

    public enum OrdersFilterBy
    {
        NoFilter = 0,
        IsCompleted = 1,
    }
    public static class AdminImmoOrderListDtoFilter
    {
        public static IQueryable<AdminImmoOrderDto> FilterOrdersBy(this IQueryable<AdminImmoOrderDto> orders, OrdersFilterBy filterBy)
        {
            switch(filterBy)
            {
                case OrdersFilterBy.NoFilter:
                    return orders;
                case OrdersFilterBy.IsCompleted:
                    return orders.Where(o => o.OrderProducts.AsEnumerable().All(op => op.IsCompleted == true));
                default:
                    throw new ArgumentOutOfRangeException
                        (nameof(filterBy), filterBy, null);
            }
        }
    }
}

无论是否使用.AsEnumerable（）展开子集合，结果都是相同的。与前一个错误相同

更新10/03第2部分

下面是一个API结果的示例，如果它有助于更好地了解层次结构

{
        "id": "1",
        "orderPicture": null,
        "saleType": 2,
        "clientName": "Toto",
        "clientPhone": "000000000",
        "fullAddress": "Toto road, 420",
        "smsCode": "XYZVDF",
        "creationDate": "2020-03-09T15:08:36.157",
        "visitDate": "2020-03-16T08:00:00",
        "orderProducts": [
            {
                "productTypeID": 1,
                "productName": "A sample product",
                "visitDate": "2020-03-16T08:00:00",
                "urgenceDate": null,
                "description": "7",
                "companyEmployeeNames": null,
                "isCompleted": false,
                "orderFiles": []
            }
        ]
    },

.All(od => od.IsCompleted == True)' by 'NavigationExpandingExpressionVisitor' failed.
This may indicate either a bug or a limitation in EF Core.
See https://go.microsoft.com/fwlink/?linkid=2101433 for more detailed information.

    public enum OrdersFilterBy
    {
        NoFilter = 0,
        IsCompleted = 1,
    }
    public static class AdminImmoOrderListDtoFilter
    {
        public static IQueryable<AdminImmoOrderDto> FilterOrdersBy(this IQueryable<AdminImmoOrderDto> orders, OrdersFilterBy filterBy)
        {
            switch(filterBy)
            {
                case OrdersFilterBy.NoFilter:
                    return orders;
                case OrdersFilterBy.IsCompleted:
                    return orders.Where(o => o.OrderProducts.AsEnumerable().All(op => op.IsCompleted == true));
                default:
                    throw new ArgumentOutOfRangeException
                        (nameof(filterBy), filterBy, null);
            }
        }
    }
}

return orders.Where(o => o.OrderProducts.AsEnumerable().All(op => op.IsCompleted == true));

{
        "id": "1",
        "orderPicture": null,
        "saleType": 2,
        "clientName": "Toto",
        "clientPhone": "000000000",
        "fullAddress": "Toto road, 420",
        "smsCode": "XYZVDF",
        "creationDate": "2020-03-09T15:08:36.157",
        "visitDate": "2020-03-16T08:00:00",
        "orderProducts": [
            {
                "productTypeID": 1,
                "productName": "A sample product",
                "visitDate": "2020-03-16T08:00:00",
                "urgenceDate": null,
                "description": "7",
                "companyEmployeeNames": null,
                "isCompleted": false,
                "orderFiles": []
            }
        ]
    },