包含投影不起作用

Question

我有这个查询

    var test = context.Assignments
        .Include(a => a.Customer)
        .Include(a => a.Subscriptions)
        .Select(a => new AssignmentWithSubscriptionCount { SubscriptionCount = a.Subscriptions.Count(), Assignment = a })
        .ToList();

    var name = test.First().Assignment.Customer.Name;

它无法急切地加载客户，我在 stackoverflow 上看到过类似的问题，而且看起来您不能将投影与包含一起使用。但是我还没有找到解决我的问题的方法..有人吗？

编辑:这是一个热切负载的投影，它比上面的例子更复杂，所以我一生都无法理解出了什么问题，谢谢。

    var test = context.PublicationStateGroups
        .Include(p => p.PublicationStates.Select(ps => ps.AllowedPublicationStateActions.Select(aps => aps.PublicationStateAction)))
        .Select(psg => new StateAndGroupInfo
        {
            ShowReport = psg.PublicationStates.Any(p => p.PublicationStateReportTypeId.HasValue),
            Actions = psg.PublicationStates.SelectMany(state => state.AllowedPublicationStateActions)
                .Select(a => a.PublicationStateAction)
                .Distinct()
        }).ToList();

    var eagerTest = test.First().Actions.First().Name;

Answer 1

这是by design . Include不适用于具有投影或自定义连接的场景。